The LessonAn obtuse angle is an angle greater than 90° and less than 180°.
An obtuse angle is greater than a right angle and less than a straight line.
Dictionary DefinitionThe Oxford English Dictionary defines an obtuse angle as "a plane angle: greater than 90 degrees and less than 180 degrees."
Real Examples of Obtuse AnglesThe angles below are all obtuse angles:
Interactive Game on the Types of Angles
- Click on an angle so it drops into the correct "bucket."
- In total, there are 10 angle to clear.
- If an angle drops into the wrong "bucket," you will lose one of your three lives.
- Good luck!