The large intestine... What does the heart do and what system is it. The heart pumps blood to the body and consists of left nd right tre nd one ventricle.... What does the lungs do and what system is it from. In the lungs oxygen enters the blood and carbon dioxcide is realised into the air.
The definition of a trapezoid is a shape with four sides, only two of which are parallel. An example of a trapezoid is the base of a pyramid when the top is flat and there is not a point. 1  a plane figure with four sides, only two of which are parallel.  Brit. trapezium (sense )
Geometry For Dummies, 2nd Edition. A trapezoid is a quadrilateral with exactly one pair of parallel sides (the parallel sides are called bases). The following figure shows a trapezoid to the left, and an isosceles trapezoid on the right. The properties of the trapezoid are as follows: The bases are parallel by definition.