Students discover the properties of interior, corresponding and alternate angles in parallel lines. As learning progresses they are challenged to prove each property using algebraic and geometrical notation. Later, students use interior and exterior angles of polygons to solve complex problems.
This topic takes place in Term 1 of Year 8 and follows on from Basic Angle Properties which students learned in Year 7.
How to introduce the sin, cos and tan trigonometric identities.
How to teach calculating the original amount after a percentage change.
The importance of the range when comparing comparing datasets.