Angle Measurements.

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Presentation transcript:

Angle Measurements

Degrees: Measuring Angles We measure the size of an angle using degrees. Example: Here are some examples of angles and their degree measurements.

Protractor A device used to measure angles.

Acute Angles An acute angle is an angle measuring between 0 and 90 degrees. Example:

Obtuse Angles Example: An obtuse angle is an angle measuring between 90 and 180 degrees. Example:

Reflex Angles An reflex angle is an angle measuring between 180 and 360 degrees.

Right Angles A right angle is an angle measuring 90 degrees. Examples:

Review State whether the following are acute, right, or obtuse. 1. 3. 5. acute obtuse right 2. 4. ? acute obtuse ?