**What are regular and irregular shapes?**

The definition of a **regular shape** is that all the sides are equal and all the inside angles are equal. An **irregular shape** doesn’t have equal sides or equal angles.

For example, an equilateral triangle is a **regular shape** because all the sides are equal AND all the angles are equal. A right angle triangle is an **irregular shape**, because although it is a shape that we recognise instantly, it has different length sides and different inside angle measurements.