Right Triangles

A right triangle is a triangle that contains a 90° angle. This angle (known as a right-angle) is normally shown by a small box inside of the triangle. Look for the box to help you identify which triangles are right triangles, and which triangles are not.

Look at the triangles pictured below. Identify which ones are right triangles and which ones are not. Move your mouse cursor OVER the triangles to see if you are right or not!