# What are angles?

An angle is a way of describing the space between 2 lines that begin at the

**same point**. An angle is a measure of how much you have to turn one of the lines so that it**perfectly overlaps**with the other.An angle is measured in

**degrees**(°) using a protractor.Angles can be measured anywhere from

**0° to 360°**. It is possible to estimate angles.

## Types of angle

An angle is how much one line is turned or rotated from another. The lines do not have to be the same length and it doesn’t matter which way they are turned, but they must start at the same point. Angles are given different names according to how big they are:

**less than ¼**turn is an**acute**angle**between ¼ and ½**turn is an**obtuse**angle**more than ½**turn is a**reflex**angle.

Angles are measured in degrees using a **protractor**. There are some special angles that are useful to remember...

a ¼ turn or

**right**angle =**90°**a ½ turn or

**straight**line =**180°**1 turn or

**full turn**or**angle around a point**=**360°**. There are 360° in a circle.

Two straight lines that cross at one point, to make an X shape, create two pairs of **opposite** angles that are **equal** to each other.