👉 Learn about parallel lines and a transversal theorems. Two lines are said to be parallel when they have the same slope and ...

👉 Learn about the interior and the exterior angles of a polygon. A polygon is a plane shape bounded by a finite chain of ...

It is important to remember other angles rules, such as angles on a straight line add up to 180°, and to recognise angles in parallel lines. Make sure you are confident in applying Pythagoras’ theorem ...