The LessonA trapezoid is a four sided shape with one pair of opposite parallel sides.
Dictionary DefinitionThe Oxford English Dictionary defines a rectangle as "a quadrilateral figure having only two sides parallel."
Parts of a Trapezoid
The parallel sides of a trapezoid are called bases.
The other sides of a trapezoid are called legs or lateral sides.
Properties of Trapezoids
Only one pair of sides of a trapezoid is parallel.
The other pair of sides is not parallel.
The Perimeter of a TrapezoidThe perimeter of a trapezoid is given by the formula:
In this formula, b1 and b2 are the lengths of the bases of the trapezoid and l1 and l2 are the lengths of the legs of the trapezoid.
The Area of a TrapezoidThe area of a trapezoid is given by the formula:
In this formula, b1 and b2 are the lengths of the bases of the trapezoid and h is the height of the trapezoid.
Read more about how to find the area of a trapezoid