# Angles

### Learn about angles!

## Acute Angle An acute angle has a measure of less than 90 degrees. | ## Right Angle A right angle has a measure of 90 degrees. | ## Obtuse Angle An obtuse angle has a measure of more than 90 degrees, and less than 180 degrees. |

## Straight Angle A straight angle has a measure of 180 degrees. | ## Complementary Angles Complementary angles are two angles that add up to 90 degrees. | ## Supplementary Angles Supplementary angles are two angles that add up to 180 degrees. |