Trapezoids

The trapezoid or trapezium is a quadrilateral with two parallel sides.

Types of Trapezoids

Right Trapezoid

A right trapezoid has two right angles.

Right Trapezoid

Isosceles Trapezoid

An isosceles trapezoid has two of its non-parallel sides equal in length.

Isosceles Trapezoid

Scalene Trapezoid

A scalene trapezoid doesn´t have equal sides or angles.

Scalene Trapezoid


Area of a Trapezoid

The area of the trapezoid is equal to the sum of its bases multiplied by its height, divided by two.

Area of a Trapezoid

Area of a Trapezoid Formula

Oblique Side of a Right Trapezoid

Oblique Side of the Right Trapezoid

Oblique Side of a Right Trapezoid

Oblique Side of the Right Trapezoid Formula

Isosceles Trapezoid Height

Isosceles Trapezoid Height

Isosceles Trapezoid Height

Height of an Isosceles Trapezoid Formula


Examples

Calculate the area of the following trapezoid:

Isosceles Trapezoid

Trapezoid Operations

Calculate the length of the oblique side of the following right trapezoid:

Right Trapezoid

Trapezoid Operations

Trapezoid Operations

Find the height of the following isosceles trapezoid:

Isosceles Trapezoid

Trapezoid Operations

Trapezoid Operations

The perimeter of an isosceles trapezoid is 110 m and the bases are 40 and 30 m. Calculate the area of the trapezoid and the length of the non-parallel sides.

Isosceles Trapezoid

Trapezoid Exercise

Trapezoid Operations

Trapezoid Solution