Students learn how to use Pythagoras' Theorem to calculate missing lengths in right-angled triangles.

As learning progresses they solve more complex problems involving triangular shapes.

**Differentiated Learning Objectives**

- All students should be able to use Pythagoras’ Theorem to find any length of a right-angled triangle.
- Most students should be able to use Pythagoras’ Theorem to find the height or base of an isosceles triangle.
- Some students should be able to prove Pythagoras’ Theorem using algebra.