Angles are measured using degrees, ranging from 0 all the way to 360 degrees in one full turn. There are many different types of angles, but possibly the most easily recognisable is the right angle.

It's a beautiful day to go outside with a kite or a balloon, and compute how wind speed alters their flight.

Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this Bitesize GCSE Maths Edexcel guide.