Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 2 - No. 28)
Which of the following statements correctly describe the properties of a right-angled triangle?
It has one angle that is exactly 90 degrees.
The sum of the squares of the two shorter sides equals the square of the longest side.
The longest side is called the hypotenuse.
The two shorter sides are always equal in length.
Forklaring
All of the first three options are true.