👉 Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value ...

Did you know that one half turn is 180°? If the straight line or half turn is divided into two angles, and we know one of the angles, we can work out the other. Here 120° + 60° = 180° If we just had ...

Parallel lines are straight lines which have the same direction and so never meet. Arrowheads show lines are parallel. A straight line that cuts a pair of parallel lines is called an intersecting ...