Students learn how to calculate a shorter side of a right-angled triangle using Pythagoras' Theorem.

Later, as learning progresses students apply Pythagoras' Theorem to solve problems involving more difficult shapes.

**Differentiated Learning Objectives**

- All students should be able to calculate a shorter side in a right-angled triangle using Pythagoras’ Theorem
- Most students should be able to calculate the perpendicular height of an isosceles triangle.
- Some students should be able to calculate the area of an equilateral and isosceles triangle.