The teacher added a bonus question: to provide a new proof for the Pythagorean theorem using trigonometry, a task previously ...

These two teenage math stars have developed five new proofs ... triangle’s angles. The paper challenges the long-held belief ...

Draw a horizontal and vertical ... height at a right angle to the base of the triangle. The isosceles triangle can be split into two right-angled triangles. Pythagoras’ theorem can then be ...