# Quadrilateral

A polygon with 4 sides

A **quad** bike has four wheels as **quadrilateral** has four sides.

**Example 1**

A kite shape is an example of a quadrilateral.

**Example 2**

A trapezium is a quadrilateral which has four sides where two of the opposing sides are parallel.

**Example 3**

A square is a quadrilateral which has four sides of equal length and an internal angle of 90° between each side.

**Example 4**

A rectangle is a quadrilateral where each opposing side is parallel and of equal length, and the internal angle between each side is 90° but not all four sides are equal in length.

**Example 5**

A parallelogram is a quadrilateral where each opposing side is parallel and of equal length, but not all four sides are equal in length. None of the internal angles of a parallelogram are 90°.

**Example 6**

A rhombus is a quadrilateral where each side is the same length and the opposing sides are parallel but the internal angle between each side is not 90°.