**www.mathsisfun.com**/**quadrilaterals**

Try drawing a quadrilateral, and measure the angles. They should add to 360° Types of Quadrilaterals . There are special types of quadrilateral: Some types are also included in the definition of other types! For example a square, rhombus and rectangle are also parallelograms.

**en.wikipedia.org**/wiki/**Trapezoid**

A trapezium as any quadrilateral more general than a parallelogram is the sense of the term in Euclid. Confusingly, the word trapezium was sometimes used in England from c. 1800 to c. 1875, to denote an irregular quadrilateral having no sides parallel. This is now obsolete in England, but continues in North America.

**www.thefreedictionary.com**/**Trapezium+(shape**)

Define Trapezium (shape). Trapezium (shape) synonyms, Trapezium (shape) pronunciation, Trapezium (shape) translation, English dictionary definition of Trapezium (shape). quadrilateral n. A polygon having four sides. adj. Having four sides. adj having or formed by four sides n Also called: tetragon a polygon having four...

**www.mathsisfun.com**/**definitions**/**trapezium**.html

A flat shape with 4 straight sides NONE of which are parallel. (Called a trapezoid in the UK. Both US and UK definitions of trapezium and trapezoid are swapped over.)

**www.merriam-webster.com**/dictionary/**trapezium**

Trapezium definition is - a quadrilateral with no parallel sides. History and Etymology for trapezium. 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

tutors.com/.../geometry-help/what-is-a-**quadrilateral**-**definition**-properties-**shapes**

Learn what a quadrilateral is, the definition of a quadrilateral, the shapes, and the properties of quadrilaterals in this lesson. Want to check out the video and lesson?

dictionary.cambridge.org/dictionary/english/**trapezium**

trapezium definition: 1. a flat shape with four sides, where two of the sides are parallel 2. a flat shape with four sides, where no sides are parallel 3. a bone in the wrist at the base of the thumb. Learn more.

**en.wikipedia.org**/wiki/**Quadrilateral**

A self-intersecting quadrilateral is called variously a cross-quadrilateral, crossed quadrilateral, butterfly quadrilateral or bow-tie quadrilateral. In a crossed quadrilateral, the four "interior" angles on either side of the crossing (two acute and two reflex, all on the left or all on the right as the figure is traced out) add up to 720°.

www.dictionary.com/browse/**trapezium**

Trapezium definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now! Dictionary.com ... The city of Tralles is built upon ground in the shape somewhat of a trapezium. The Geography of Strabo, Volume III (of 3) | Strabo.

**www.thefreedictionary.com**/**trapezium**

1 Aldous Huxley turned down the offer of a knighthood 2 Ben-Hur, starring Charlton Heston, was released 3 Margaret Thatcher first became MP for Finchley 4 Francois Mitterrand escaped an assassination attempt in Paris impossipuzzles "It's a funny shape, a trapezium," said George.