Right Angles

• Definition
• Review
• Quick Quiz

Students should be able to:

• identify and describe the relative size of acute, obtuse and straight angles with respect to right angles.

Right Angle

When an angle rotates 90º, the angle is called a right angle. The two rays that form the angle are said to be perpendicular.

Click the button below to make a right angle. Notice the box symbol that is used to show that the angle is a right angle, or has a measure of 90º.

Right angles on a tile floor

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Quick Quiz

Which of the following letters does not have any right angles? (Click the button under the correct answer)