What are angles?

A visual explanation of angles.

How to use right-angled triangles to solve geometry problems

A simple, step-by-step, visual guide showing you how to use right angle triangles to solve geometry problems.

How to show the sum of angles in a polygon is (n-2) x 180°

A simple, step-by-step, visual guide showing you how to prove the angles of a regular polygon equal 180° x (n-2).

How to show the angles in a triangle add up to 180°

A simple, visual, step-by-step guide on how to show the angles in a triangle add up to 180°.

How to find missing angles on bisecting lines

A simple, step-by-step, visual guide showing you how to work out the angles on bisecting lines.

How to bisect lines and angles

A simple, step-by-step, visual guide showing you how to bisect lines and angles.

How to draw a perfect five-pointed star

A simple, step-by-step, visual guide showing you how to draw a perfect five-pointed star.

2 class clips

We have a selection of great videos for use in the classroom