**Differentiated Learning Objectives**

- All students should be able to calculate either of the two short sides in a right-angled triangle using Pythagoras’ Theorem
- Most students should be able to calculate the perpendicular height of an isosceles triangle when given its hypotenuse and base.
- Some students should be able to calculate the area of an equilateral and isosceles triangle by calculating either its base or perpendicular height.