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**A trapezoid has four sides.** It is a simple, convex quadrilateral with at least one pair of parallel sides. In British English, it is typically called a trapezium.

Formerly, the word trapezoid in British English meant a quadrilateral with no parallel sides, or what is often called an irregular quadrilateral.

Agreement as to the classification of trapezoids is not universal. Some regard only quadrilaterals with one single pair of parallel sides as trapezoids. Others regard the parallelogram, with two pairs of parallel sides, as a special type of trapezoid. This definition includes rectangles, rhombuses and squares as trapezoids as well because they are all special types of parallelogram.

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## What is a quadrangle that is not a parallelogram?

A:A trapezoid is a quadrangle that is not a parallelogram. A trapezoid is a quadrangle because it has four sides and four internal angles, but it is not a parallelogram because it only has one pair of parallel sides rather than two.

Full Answer >Filed Under: - Q:
## Does a trapezoid have right angles?

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Full Answer >**A trapezoid may have right angles, but they are not required.**The definition of a trapezoid only specifies that it must be a quadrilateral, or a closed, four-sided shape, and that it must have only one pair of parallel sides.Filed Under: - Q:
## What is the formula for the area of a trapezoid?

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Full Answer >**The area of any trapezoid with base side lengths "b1" and "b2" and height "h" is given by the formula A = h(b1 + b2)/2.**The base sides are the trapezoid's two parallel sides. The trapezoid's height is the length of a perpendicular line drawn between the two base sides.Filed Under: - Q:
## Is a trapezoid a parallelogram?

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Full Answer >**Trapezoids are not necessarily parallelograms, as a trapezoid only needs one pair of parallel sides, unlike parallelograms, which need two.**However, there are two definitions of what a trapezoid is, and one of them considers parallelograms to be trapezoids.Filed Under: