# Match the angles greater than 90° with their reference angles. 30 degrees,135 degrees, 90 degrees

We will use the concept of Acute angle, Obtuse angle, Right angle to match the angles.

## Answer : Acute angle = 30 degrees, Obtuse angle = 135 degrees, Right angle = 90 degrees

Let's see how we will use the concept of Acute angle, Obtuse angle, Right angle to match the angles.

**Explanation :**

Acute angles: The angles that are lesser than 90 degrees are called as acute angles. Eg. 23 degrees, 89 degrees, 70 degrees, etc.

Hence from the given question, 30 degrees is an acute angle.

Obtuse angles: The angle that is greater than 90 degrees but lesser than 180 degrees are known as obtuse angles. Eg. 91 degrees. 110 degrees, 179 degrees, etc

Hence from the given question, 135 degrees is an obtuse angle.

Right Angle: The angles that are equal to 90 degrees are known as the right angle.

Hence from the given question 90 degrees is right angle .