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 )
Quick Answer. A trapezoid has four sides and four vertices. A vertex is a corner of a polygon. According to Reference.com, a trapezoid is a quadrilateral plane figure that has two parallel sides and two non-parallel sides. All four-sided figures have four corners, or vertices. The perimeter of a trapezoid is determined the same way as that of a square or rectangle: the length of all four sides are added together. The area, however, is not determined the same way. For squares and rectangles, the area is determined by the formula area equals length times width.