Obtuse Angles

An obtuse angle is one which is more than 90° but less than 180°


This is an obtuse angle !

All the angles below are obtuse angles:

Remember to look carefully at which angle you are being asked to name. It is the smallest angle which is between the lines. The obtuse angle is more than 90° and less than 180°.

I have actually used the same angles as on the Reflex Angles page. The reflex angle is the other side of the lines. If you look at both pages and add the reflex and the obtuse angle for the same shapes you will always come to 360°