Obtuse Angles

Different Angles have different names:

types of angle

An Obtuse Angle is more than 90° but less than 180°

Obtuse Angle

All the angles below are obtuse angles:

Obtuse Angles

Which Angle?

Remember to look carefully at which angle you are being asked to name.

The obtuse angle is the smaller angle.
It is more than 90° and less than 180°.

angle obtuse vs reflex
The smaller angle is an Obtuse Angle,
but the larger angle is a Reflex Angle

If you choose the larger angle you have a Reflex Angle instead: