16~\text{cm}^\text{2}\) This is Pythagoras' theorem. Pythagoras' theorem states that, in any right-angled triangle, the square of the hypotenuse is equal to the sum of the squares on the other two ...

16~\text{cm}^\text{2}\) This is Pythagoras' theorem. Pythagoras' theorem states that, in any right-angled triangle, the square of the hypotenuse is equal to the sum of the squares on the other two ...

This theorem ... bisector between two arms at 90 degrees (right angle) makes it easier to see how the inverse angles are complementary instead of complex-angled shapes like isosceles triangles.