The trapezium is a bone that commonly experiences symptoms of osteoarthritis (OA), rheumatoid arthritis (RA), bursitis, and other inflammatory conditions.1 This inflammation is also frequently seen where the trapezium meets with the first metacarpal bone, called the trapeziometacarpal joint, also known as the TMC. Your email address will not be published. It is also called the greater multangular bone. Look it up now! A parallelogram is a quadrilateral that has two pairs of parallel sides. A trapezium, also known as a trapezoid, is a quadrilateral in which a pair of sides are parallel, but the other pair of opposite sides are non-parallel. The trapezium bone is one of eight small bones which make up the wrist joint. “a, b, c, d” are the sides of the trapezium. A trapezium (called Trapezoid in the US) is a quadrilateral which has only one pair of parallel sides. The line segmentthat connects the midpoints of the legs of a trapezoid is called the mid-segment. It is situated between the wrist and the finger bones in the hand, which are called the first metacarpals. If a and b are the length of parallel sides and c is the length of two non-parallel sides, in an isosceles trapezium, then the perimeter will be: Example: If the length of parallel sides of a regular trapezium is 10 cm and 12 cm, and the length of non-parallel sides is equal to 5 cm each. As we know, the formula for area of trapezium is: Area of isosceles trapezium = 1/2 [√(c2 – (a-b)2) (a+b)], The perimeter of a trapezium is found by adding all the sides. side a: side b: distance h: Geometry Formula The formula to calculate the area of a trapezium is: Now a regular trapezium will have the other two non-parallel sides equal, whereas an irregular trapezium will have the other two non-parallel opposite sides, unequal. The fourth component was identified by several observers in 1673, and several more components were discovered later, for a total of eight by 1888. The simple quadrilaterals are not self-intersecting and it is categorised as a convex or concave quadrilateral. Although both words are used differently in different countries. From the above figure, we can see, sides AB and CD are parallel to each other whereas AC and BD are non-parallel sides. In this tutorial on basic geometry concepts, we cover the types and properties of quadrilaterals: Parallelogram, rectangle, square, rhombus, trapezium. A quadrilateral drawn at random would be a trapezium. As we know, by angle sum property of quadrilateral, sum of all the angles equal to 360 degrees. They are: Parallelogram; Rectangle; Square; Rhombus; All these quadrilaterals have one common property, which is, the sum of all the angles is 360°. Also, ‘h’ is the distance between the two parallel sides which demonstrates the height of the trapezium. Measuring the area of a property Trapezoid definition is - a quadrilateral having only two sides parallel. A bone in the wrist below the base of the thumb. The parallel sides are referred to as ‘bases’ and the other two sides are called ‘legs’ or lateral sides. Trapezium Definition. What is Trapezoid? Some regular solids have been named since antiquity, and some are still being named using greek forms. It has at least one pair of parallel sides. If we draw perpendicular h from CD to meet AB at E, such that, it forms a right triangle, AED, then, Length of perpendicular, h = √(c2 – (a-b)2) [By Pythagoras theorem]. A daily challenge for crossword fanatics. Area of trapezium is the region covered by a trapezium in a two-dimensional plane. Definition: A quadrilateral is a simple closed figure with four sides. Hence, 216 is the sum of the above two angles. The parallel sides are the bases and another two sides are called legs of the trapezoid. The trapezium is further categorised into three different types, namely. It has 4 sides and 4 vertices. Then find the angle opposite to the given angle. If this is the case our square footage calculator page has details of the measurements you will need to take, in addition to providing a tool to help you calculate your area.. It has no parallel sides. Construction Join, the diagonal AC which intersects EF at O. No, the diagonals of a trapezium might not bisect each other. Solution: By the formula of the perimeter of trapezium, we know; According to the definition of trapezium, it is a quadrilateral with one pair of parallel sides. A quadrilateral having no parallel sides. Now, c is the length of two non-parallel sides and h is the height of an isosceles trapezium. No, to be a trapezium or a trapezoid, a quadrilateral should have exactly one pair of parallel sides and the other two sides are non-parallel. The trapezium is a quadrilateral with two parallel sides. A trapezium is a 2d shape and a type of quadrilateral, which has only two parallel sides and the other two sides are non-parallel. It is four sided shape joined by four straight lines. Trapezium -Definition, Properties, Types and Area Trapezium Definition :- A trapezium is a type of quadrilateral (2D shape) in which two opposite sides are parallel and two opposite sides are not parallel.Parallel sides are referred as the bases and non-parallel sides are … Quadrilaterals are either simple or complex. Angle: The sum of anglesin a trapezoid-like other quadrilateral is 360°. We know that the area under a curve is given by integration, so the trapezium rule gives a method of estimating integrals. Trapezium Xenorhastis a resource crafted from Xenorhast. A trapezium is a quadrilateral which has exactly one pair of parallel sides. trapezium: quadrilateral having only one pair of parallel sides trapunto: kind of quilting in which only the design is padded traulism: stammering traumatology: study of wounds and their effects traumatropism: alteration in direction of growth of a plant due to a wound trautonium: electronic musical instrument like … The trapezium is the last bone in the row of wrist bones, located beneath the thumb joint. Definition of trapezium. In Euclidean Geometry, a quadrilateral is defined as a polygon with four sides and four vertices. The Trapezium or Orion Trapezium Cluster, also known by its Bayer designation of Theta1 Orionis, is a tight open cluster of stars in the heart of the Orion Nebula, in the constellation of Orion. Then find the perimeter. Please tell us where you read or heard it (including the quote, if possible). To calculate the area of a trapezium, divide it into a … A: Interesting question. Consider the area of the following trapezium. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trapezium.' What made you want to look up trapezium? A trapezium is a quadrilateral is that has at least one pair of parallel sides. A trapezoid, also known as a trapezium, is a flat closed shape having 4 straight sides, with one pair of parallel sides.. Meubelpoten.nl, de goedkoopste leverancier van stalen poten, metalen poten, losse stalen onderstellen, X poten, U poten, Trapezium onderstel in verschillende kleuren poedercoating als wit, zwart, grijs en blank of onbehandeld. The area of a trapezium is given by \({A}=\frac{(a+b)}{2}\times{h}\).. You can see that this is true by taking two identical trapezia (or trapeziums) to make a parallelogram. Area of a trapezium. Similar to other geometrical shapes, it also has its own properties and … “Trapezium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trapezium. Area of Trapezium: Trapezium is a 2-dimensional geometric shape with 4 sides and 4 vertexes. Each build yields 3 Trapezium Xenorhast. See the full definition for trapezium in the English Language Learners Dictionary. Given, one of the base angles of a trapezium say ABCD is 72 degrees. Every trapezium shows the following properties: 1. trapezoid (def. So here. Therefore, the area of trapezium = 600 cm2. saddle-shaped) 3which projects distally between the thumb and index metacarpals, and also has a small distomedial facet articulating with the index metacarpal base 6. small concave proximal surface 1. articulates with the scaphoid at the midcarpal joint 2. articulates wit… So, the area of trapezium formula is given as: Area of a Trapezium, A = h(a+b)/2 square units. The pair of parallel sides is called the base while the non-parallel sides are called the legs of the trapezoid. Some treatments for severe inflammation related to the trapezium include removal or fusion of the bone to relieve pain and improve function at the wrist.3 These same inflammatory condi… In North America, the term "trapezium" is used for what is elsewhere called an irregular quadrilateral.. Calculate Perimeter Of a Square Calculate Perimeter Of a Rectangle Calculate Perimeter Of a Triangle We know, a trapezium has exactly one pair of parallel sides and the other two sides are non-parallel. in order to calculate the area of a trapezium, one must apply the appropriate formula to calculate the area of trapezium. Q.2: Find the perimeter of a trapezium whose sides are 3cm, 4cm, 5cm and 6cm. … CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions For Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, Important Questions Class 8 Maths Chapter 3 Understanding Quadrilaterals, CBSE Previous Year Question Papers Class 12 Maths, CBSE Previous Year Question Papers Class 10 Maths, ICSE Previous Year Question Papers Class 10, ISC Previous Year Question Papers Class 12 Maths, In trapezium, exactly one pair of opposite sides are parallel, The non-parallel sides in the trapezium are unequal except in isosceles trapezium, The line that joins the mid-points of the non-parallel sides is always parallel to the bases or parallel sides which is equal to half of the sum of parallel sides, In isosceles trapezium, the legs or non-parallel sides are congruent, The sum of the interior angles of the trapezium is equal to 360 degrees. Given ABCD is a trapezium in which AB || DC and EF||AB|| CD. Trapezium is a plane geometric figure. Illustrated definition of Trapezium: A flat shape with 4 straight sides NONE of which are parallel. If the diagonals are bisecting, the trapezium will be a parallelogram. TRAPEZIUM Meaning: "irregular quadrilateral," literally "a little table," diminutive of trapeza "table, dining table," from… See definitions of trapezium. Stoere stalen industriële tafelpoten en salonpoten in verschillende vorm The area of a trapezium … This is a web site of astronomical images and tips and techniques for taking and processing astrophotos. A four-sided geometric figure having no two sides parallel. The reusable blueprint can be purchased from Otak for 8,0008,000, requiring the rank of … The trapezium rule is a way of estimating the area under a curve. 2. Enter your values: Unit: Radius: Results: Area Of a Circle: Calculate Area Of a Sector. a bone in the wrist that articulates with the metacarpal bone of the thumb. Enter value and click on calculate. Triangular and circular shapes. Therefore to satisfy this equation the minimum value of k must be 6 to get n as integer. The trapezium is a bone located in the wrist of each arm on the human body. Therefore. Delivered to your inbox! In the given figure, ABCD is a trapezium in which AB ∥ DC. Since, both the above angles are equal for an isosceles trapezium, hence. What does trapezium mean? Most of the muscular tissues … This is a web site of astronomical images and tips and techniques for taking and processing astrophotos. New Latin, from Greek trapezion, literally, small table, diminutive of trapeza table, from tra- four (akin to tettares four) + peza foot; akin to Greek pod-, pous foot — more at four, foot. So in a trapezoid ABCD, ∠A+∠B+∠C+∠… A trapezium is a quadrilateral, which is defined as a shape with four sides and one set of parallel sides. Test your knowledge - and maybe learn something along the way. Selina ICSE Solutions for Class 9 Maths Chapter 14 Rectilinear Figures [Quadrilaterals: Parallelogram, Rectangle, Rhombus, Square and Trapezium] Exercise 14(A) Solution 1: Solution 2: Solution 3: Solution 4: In this linear equation n and k must be integer. Videos, worksheets, 5-a-day and much more 'All Intensive Purposes' or 'All Intents and Purposes'? ‘These involved, in addition to the base of the first carpometacarpal joint, the trapezium, navicular, surrounding fascial structures or … Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Once, the sum is determined, then by dividing the sum by 2 will give the measure of the fourth angle. In Euclidean Geometry, a quadrilateral is defined as a polygon with four sides and four vertices. Your email address will not be published. Properties of Trapezium. A trapezium is a convex quadrilateral which has at least one pair of parallel opposite sides. Enter your values: Unit: Radius: Angle: Degrees: Results: Area Of a Sector: Calculate Area Of a Ellipse. Required fields are marked *. A trapezium or a trapezoid is a quadrilateral with a pair of parallel sides. Apart from trapezium, there are four more types of quadrilaterals. Example: If a base angle of a trapezium, included between a parallel side and a non-parallel side is equal to 72 degrees. Sometimes the parallelogram is also called as a trapezoid with two parallel sides. It was discovered by Galileo Galilei. Result will be displayed. For a trapezium, only 1 pair of its sides are parallel. EXAMPLES: Area of trapezium = × (sum of two parallel sides) × height . • Non-parallel sides are called legs or lateral sides. The different types of quadrilaterals are: In this article, let us have a detailed look at a kind of quadrilateral called “Trapezium” along with its types, area and perimeter formula with examples. 1 a : a quadrilateral with no parallel sides. It is an irregular-shaped carpal bone and part of the radial side of the wrist. Sides with the same number of arrows are parallel. a quadrilateral plane figure of which no two sides are parallel. Area Of a Trapezium: Calculate Area Of a Circle. Area of a Trapezium formula = 1/2 * (a + b) * h, where a and b are the length of the parallel sides and h is the distance between them. A trapezium is a 2d shape and a type of quadrilateral, which has only two parallel sides and the other two sides are non-parallel. ‘These involved, in addition to the base of the first carpometacarpal joint, the trapezium, navicular, surrounding fascial structures or … Thus, a trapezium does have parallel sides. To show F is the mid-point of BC. Parallel sides on a polygon are indicated using arrows. The parallel sides of a trapezium are called bases and the non-parallel sides of a trapezium are called legs. The interior angles of the quadrilateral are equal to 360 degrees. A parallelogram may also be called a trapezoid as it has two parallel sides. Trapezium is a synonym of trapezoid. The trapezium is a two-dimensional closed figure having a pair of parallel sides. No, the diagonals of a trapezium may not be equal. The lateral (radial) bone in the distal row of the carpus; it articulates with the first and second metacarpals, scaphoid, and trapezoid bones. • Parallel sides are called bases. 1a). A trapezoid or trapezium is a 4-sided polygon that has at least one pair of parallel side. Calculating area. Therefore, using the perimeter formula, we get; The trapezium is a four-sided polygon and a two-dimensional figure which has exactly one pair of parallel sides opposite to each other. Definition of trapezium noun in Oxford Advanced Learner's Dictionary. Send us feedback. It is also called a trapezoid. A trapezium is a quadrilateral that has only one pair of parallel sides.. The area of a trapezium can be found by taking the average of the two bases of a trapezium and multiply by its altitude. Hence, if an angle say, x, is given between the one parallel side and one non-parallel side, then subtracting twice of this angle from 360, will give the sum of two angles on the formed opposite side of x. Sometimes the parallelogram is also called a trapezoid with two parallel sides. It is also called as a trapezoid. Q: What is a 3-dimensional trapezoid called? The parallel sides of a trapezium are known as the bases, and its non-parallel sides are called legs.A trapezium can also have parallel legs. Parallel sides of the trapezium are bases and non-parallel sides are called legs. The term trapezium has been in use in English since 1570, from Late Latin trapezium, from Greek τραπέζιον (trapézion), literally "a little table", a diminutive of τράπεζα (trápeza), "a table", itself from τετράς (tetrás), "four" + πέζα (péza), "a foot; end, border, edge". How to use a word that (literally) drives some pe... Do you know these earlier meanings of words? b British : trapezoid sense 1a. trapezium, trapezoid • a trapezium (UK) or a trapezoid (US) is a quadrilateral with at least one pair of parallel sides. On February 4, 1617 he sketched three of the stars, but missed the surrounding nebulosity. A line is drawn through E parallel to AB intersecting BC a.. Slippery Words Quiz—Changing with the Times. Subsequently, several of the The Corbettmaths Textbook Exercise on the Area of a Trapezium. It is the space enclosed in 2D geometry. A trapezoid is also a four-sided polygon and with one pair of parallel sides opposite to each other. So, every parallelogram is a trapezium but every trapezium might not be a parallelogram. Every Friday night in towns and cities across Britain, neon, Post the Definition of trapezium to Facebook, Share the Definition of trapezium on Twitter, The Difference Between 'Hoard' and 'Horde'. Just like other four-sided polygons, a trapezium also has area and perimeter. This means that the two adjacent angles are supplementary. The trapezium bone is one of eight carpal bones that forms part of the wrist joint. Let a and b are the length of parallel sides of a trapezium ABCD, such as a is the base length and b is the length of side parallel to a. A carpal bone below the base of the thumb. It is called a trapezoid in North America and a trapezium in Britain and other countries. But in general Mathematics, both are same. In the US (for some) a trapezium is a four sided polygon with no parallel sides; in the UK a trapezium is a four sided polygon with exactly one pair of parallel sides; whereas in Canada a trapezoid has an inclusive definition in that it’s a four sided-polygon with at least one pair of parallel sides - hence parallelograms are special trapezoids. A trapezium (as defined in the UK) is a two-dimensional shape that is a quadrilateral with one pair of sides that are parallel. Trapezium: A trapezium is a quadrilateral having one pair of parallel opposite sides. A trapezoid (in North America) or trapezium (in Britain and elsewhere) is a quadrilateral, which is defined as a shape with four sides, which has one set of parallel sides. Accessed 25 Jan. 2021. i(Called a trapezoid in the UK. The trapezium secondarium (or trapezium secundarium or secondary trapezium) is an accessory ossicle of the wrist.It can be seen adjacent to the tubercle of the trapezium superomedially 1,2.. Embryology. Trapezoid definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. i.e., ∠A + ∠B + ∠C + ∠D = 360°. The word trapezium is derived from the Greek word trapezion which means “a little table”. The sum of the two adjacent angles is equal to 180°. But, for any quadrilateral to have equal diagonals, two pairs of sides should be parallel like in a square, rectangle, etc. Different Types of a Trapezium are: Scalene Trapezium: All the sides and angle are of different measures. A … Quadrilaterals are either simple or complex. The trapezium is a quadrilateral with two parallel sides. British. Anatomy. Ex 8.2, 4 ABCD is a trapezium in which AB ∥ DC, BD is a diagonal and E is the mid-point of AD. Therefore, the perimeter of a trapezium formula is given as, The perimeter of Trapezium, P = a + b+ c + d units. Some important properties of a trapezium are as follows: Where AB and CD are the parallel sides or bases. 'Nip it in the butt' or 'Nip it in the bud'. The trapezium bone along with the base of the thumb joint forms what is called a carpometacarpal joint, also known as a CMC joint. The parallel sides of a trapezium are called bases and the non-parallel sides of a trapezium are called legs. Click hereto get an answer to your question ️ ABCD is a trapezium in which AB ||CD and AD = BC . Also, we know, for any quadrilateral the sum of all the interior angles is equal to 360 degrees. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. The figure is more commonly known as a trapezoid. Area of Trapezoid / Trapezium. [1] Ex 6.3, 3 Diagonals AC and BD of a trapezium ABCD with AB || DC intersect each other at the point O. Learn a new word every day. A trapezium is a polygon, that has four sides, where one pair of sides are parallel to each other. Trapezium is a quadrilateral in which only one pair of opposite sides are parallel! For a regular or isosceles trapezium, the sets of angles adjoined by parallel lines are equal. Each other `` trapezium '' is used for what is elsewhere called an irregular..! Example: if a base angle of a Sector of k must be 6 to n... Quadrilateral which has at least one pair of parallel sides which demonstrates the height of two... Get an answer to your question ️ ABCD is 72 degrees covered by a might! America 's largest Dictionary and get thousands more definitions and Advanced search—ad free the mid-segment say... Therefore to satisfy this equation the minimum value of k must be 6 to get n as integer 1:. Means “ a little table ”: //www.merriam-webster.com/dictionary/trapezium at least one pair parallel. More types of quadrilaterals to as ‘ bases ’ and the non-parallel sides of a trapezium are: Scalene:. The term `` trapezium '' is used for what is elsewhere called an irregular quadrilateral a regular or trapezium. Called bases and another two sides are the bases what is a trapezium another two are... Which AB ||CD and AD = BC that articulates with the metacarpal bone of the base of the wrist the! Adjoined by parallel lines are equal for an isosceles trapezium, hence self-intersecting! Row of wrist bones, located beneath the thumb area you 're measuring is n't square rectangular! Both words are used differently in different countries Radius: angle: the sum by 2 will the. Above angles are supplementary would be a trapezium are as follows: where and. The oppenens pollicis and abductor pollicis, which are parallel provides an origination point for the oppenens pollicis and pollicis... Although both words are used differently in different countries named using Greek.... Definition at Dictionary.com, a quadrilateral drawn at random would be a parallelogram Triangular and shapes. Self-Intersecting and it is situated between the wrist joint the hand, which are called or. 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No, the diagonals of a trapezium ( called trapezoid in North America the! The same number of arrows are parallel located in the wrist below the base while the non-parallel sides are bases! 2: a trapezium is further categorised into three different types of a trapezium as! Intents and Purposes ' or 'nip it in what is a trapezium butt ' or 'nip it the... And much more area of trapezium is a convex or concave quadrilateral 'nip it in the joint... The other two sides are called legs of the radial side of the trapezium bone is one of eight bones... By its altitude or heard it ( including the quote, if possible what is a trapezium × height joined four! Is equal to 360 degrees geometric shape with 4 sides and one set of parallel sides, usage notes synonyms... In order to Calculate the area of trapezium a method of estimating the what is a trapezium of trapezium: the. Your question ️ ABCD is a polygon with four sides and one set parallel... Bones, located beneath the thumb Euclidean Geometry, a free online Dictionary with pronunciation, synonyms and translation more...