- You know what the short sides and what the hypotenuse is in a right-angled triangle.
- You can make sketches.
- You can use Pythagoras' theorem to calculate the third side in a right-angled triangle when you know two sides.
- You can give exact answers.
- You can use Pythagoras' theorem in stories and round your answer sensibly.
- You can use Pythagoras' theorem in cuboids and pyramids
(NOT §6.5, finding out if triangles are acute- or obtuse-angled)