A right-angled triangle has the following features:
- It contains a right angle corner
- The longest side is called the hypotenuse and is opposite the right angle
- The sum of the two other angels in a right angle triangle add up to 90º and are all complementary angles.
The Pythagoras’ Theorem states that the square formed on the hypotenuse of a right-angled triangle is identical to the sum of the areas of the squares formed on the other two sides.
This is expressed in the following formula:
c² = a² + b²