# Obtuse Angle

🏆Practice types of angles (right, acute, obtuse, flat)

## Definition of Obtuse Angle

An obtuse angle is an angle that measures more than$90°$ degrees, but less than $180°$ degrees.

Acute angles can appear in triangles, parallelograms, and other geometric shapes.

Obtuse Angle

## Test yourself on types of angles (right, acute, obtuse, flat)!

True or false?

The sum of two acute angles can be greater than 180 degrees?

## Examples and Exercises with Solutions for Obtuse Angles

### Exercise #1

True or false?

One of the angles in a rectangle may be an acute angle.

### Step-by-Step Solution

One of the properties of a rectangle is that all its angles are right angles.

Therefore, it is not possible for an angle to be acute, that is, less than 90 degrees.

False

### Exercise #2

True or false?

The sum of two acute angles can be greater than 180 degrees?

False.

### Exercise #3

Does the drawing show an adjacent angle?

Not true

### Exercise #4

Does the drawing show an adjacent angle?

Not true

### Exercise #5

Does the drawing show an adjacent angle?