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An obtuse angle is an angle that measures greater than 90 degrees and less than 180 degrees.

en.wikipedia.org/wiki/Acute_and_obtuse_triangles

An acute triangle is a triangle with all three angles acute (less than 90°). An obtuse triangle is one with one obtuse angle (greater than 90°) and two acute angles ...

simple.wikipedia.org/wiki/Obtuse_angle

An obtuse angle is a form of angle that measures wider than 90° and less than 180°. It is bigger than an acute angle. You can measure angles with a protractor.

www.mathsisfun.com/obtuse.html

Obtuse Angles. Different Angles have different names: types of angle. An Obtuse Angle is more than 90° but less than 180°. Obtuse Angle This is an obtuse ...

www.mathsisfun.com/angles.html

In One Diagram. This diagram might make it easier to remember: Also: Acute, Obtuse and Reflex are in alphabetical order. angle types together ...

www.mathsisfun.com/definitions/obtuse-angle.html

Obtuse Angle. more ... Obtuse Angle. An obtuse angle is one which is more than 90° but less than 180° In other words, it is between a right angle and a straight ...

In this lesson, you'll learn what angles, right angles, and obtuse angles are; and you'll see a few examples of different obtuse angles. Then test...