1. Does Pythagoras' Theorem apply to non-right angled triangles?
No, the triangle MUST be right-angled.
2. What is the most common mistake made by people using Pythagoras' Theorem?
They add together the square of the hypotenuse with the square of one of the short sides instead of adding the squares of the two short sides.
3. What is the second most common mistake made by people using Pythagoras' Theorem?
Forgetting to take the square root at the end.
