# Measurement of Angles

## Lines and Angles of Class 7

One of the most commonly used unit for the measurement of an angle is one degree measurement and is denoted as 1°.

### Acute Angles

An Acute Angle is less than 90°

This is an acute angle

### Right Angle –

A right angle is an internal angle which is equal to 90°

This is a right angle

Note the special symbol like a box in the angle. If you see this, it is a right angle. The 90° is rarely written in. If you see the box in the corner, you are being told it is a right angle.

All the angles below are right angles

A right angle can be in any orientation or rotation as long as the internal angle is 90°

Shown in Fig.

This is an obtuse angle

### All the angles below are obtuse angles:

An angle which measures between 90° and 180° is called an obtuse angle.

In fig.

types of angles, angles, types of angles math, types of angle, right angle, acute angle, obtuse angle, types of angles song, different types of angles, straight angle, angle, types of triangles, 7 types of angles, acute angles, tupes of angles, types of angles zero, types of angles video, what are angles, types of angles for kids, right angles, geometry types of angles, types of angles geometry