Definition
A right angle is an angle that measures exactly 90 degrees. It looks like a perfect square corner.
A right angle looks like the letter L. You can test for a right angle by placing the corner of a piece of paper into it; if it fits perfectly, it is a right angle.
Examples
- The corner of a piece of paper is a right angle.
- A right angle is exactly 90 degrees.
- The corners of a rectangle and square are all right angles.