simple.wikipedia.org/wiki/Obtuse_angle

An **obtuse angle** is a form of angle that measures wider than 182837474738:929:
84747474747383 and less than 180°. It is bigger than an **acute angle**. You can ...

en.wikipedia.org/wiki/Angle

In planar geometry, an angle is the figure formed by two rays, called the sides of
the angle, .... Angles smaller than a right angle (less than 90°) are called **acute**
**angles** ("acute" meaning "sharp"). An angle equal to 1/4 turn (90° or π/2 radians)
is ...

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**. All the angles below ...

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 ...

study.com/academy/lesson/what-is-an-obtuse-angle-definition-examples.html

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...

www.khanacademy.org/math/basic-geo/basic-geo-angle/basic-geo-angle-types/v/acute-right-and-obtuse-angles

**Acute angles** measure less than 90 degrees. Right angles measure 90 degrees.
**Obtuse angles** measure more than 90 degrees. Learn about angles types and ...

www.dictionary.com/browse/obtuse-angle

**Obtuse angle** definition, an angle greater than 90° but less than 180°. See more.

virtualnerd.com/middle-math/geometric-figures/angles/acute-obtuse-right-straight-angle-definition

Note: Did you know that there are different kinds of **angles**? Knowing how to
identify these **angles** is an important part of solving many problems involving
**angles** ...

www.mathopenref.com/angleobtuse.html

Definition of an **obtuse angle**. An angle between (but not including) 90 deg and
180 deg.