An angle is the amount of turn between two lines. An angle is measured in degrees (°). Angles are a way of describing the space between 2 lines that begin at the same point. They are a measure of how ...

Click to see a step-by-step slideshow. STEP 2: Label the angle you know and colour in the angle arc. Colour in the opposite angle in the same colour, and the other two angles in a different colour.