An angle shows how much something turns or the space between two lines.

Angles can be:

• A turn (like turning a corner)
• A corner (like the corner of a shape)

Angles do not change size if you make them bigger or smaller. This means:

• A small angle drawing and a big angle drawing can still be the same angle.
• Angles stay the same size if the image is big or small. It doesn't make a difference to the angle.
• The length of the lines in your drawing of an angle does not matter.

Only the amount of turn matters!

Angles are found in all shapes. For example:

• A triangle has 3 angles
• A square has 4 right angles
• A rectangle also has 4 right angles

Look carefully at shapes to find and compare their angles.

A right angle is one of the most important angles to learn.

A right angle is a quarter turn, which means it is one quarter of a full circle. It is always 90° (ninety degrees).

Right angles are very common in everyday life. You can find them in:

• The corners of books
• Doors and windows
• Tables and floors
• The edges of walls and rooms

A good way to recognise a right angle is that it makes a perfect square corner.

Turns

Angles are linked to turns.

• 1 right angle = quarter turn
• 2 right angles = half turn (180°)
• 3 right angles = 3 quarter turn (270°)
• 4 right angles = full turn (360°)

These facts help you understand how angles fit together.