How many right angles does a right triangle have?

1 Answer
Dec 25, 2015

A right triangle has only one right angle.


Since the sum of all angles in any triangle is equal to #180^o#, so there can be only one right angle if all other angles are to be greater than zero.

Let's assume that there are two right angles

The sum would be:


So the angle C would have to be zero, which is impossible.