### Home > MC2 > Chapter 5 > Lesson 5.3.1 > Problem 5-90

5-90.

Decide if these angles are acute, obtuse, or right angles. All diagrams are drawn to scale.

Acute angle: An angle with a measure between (but not including)

Right angle: An angle measuring

Obtuse angle: An angle with a measure between (but not including)

To determine the type of angle, use a

Since the angle is greater than

, it is obtuse.

Acute angle