# How do you know?

If you can divide `360^@` exactly by an inside angle of a regular shape and get a whole number it can form a tessellation pattern.

## Triangle

`360/60=6`

(6 is a whole number)

**Answer: **

6 therefore this triangle can form a tessellation.

## Square

`360/90=4`

(4 is a whole number)

**Answer: **

A square can form a tessellation.

**Pentagon**

`360/108=3.33`** **

(3.33 is** NOT** a whole number)

**Answer: **

A pentagon can **NOT **form a tessellation.

## Hexagon

`360/120=3`

**Answer: **

A hexagon can be tessellated.