Obtuse Angles

What is an obtuse angle?
An obtuse angle is an angle that is greater than 90 degrees
but less than 180 degrees.

If an angle is exactly 180 degrees is it still called an obtuse angle?
No. For an angle to be called an obtuse angle it must be less than 180 degrees.

Maths Obtuse Angle
Maths Obtuse Angle Worksheet
Maths Obtuse Angle Interactive