Key learning points

1. For a right-angled triangle, you need the hypotenuse and one other side length to prove congruence.
2. Right-angled triangles, by definition, have a right-angle.
3. There is a special relationship between the sides in a right-angled triangle.

Keywords

• Hypotenuse - The hypotenuse is the side of a right-angled triangle which is opposite the right angle.

Common misconception