# How do you find the area of a 4-sided polygon?

##### 1 Answer

Sep 25, 2016

There are formulae for the common quadrilaterals, else find the area of two triangles and add them together.

#### Explanation:

A 4-sided polygon is a quadrilateral. This is family of well-known shapes. Most of them have their own formula for area:

Trapezium:

Parallelogram/Rhombus:

Rectangle:

Kite/Rhombus/square:

Square:

For any other quadrilateral, divide the shape into two triangles, find the area of each and add them together.