**An obtuse angle is an angle that measures more than****$90°$**** degrees, but less than** **$180°$**** degrees.**

Acute angles can appear in triangles, parallelograms, and other geometric shapes.

**An obtuse angle is an angle that measures more than****$90°$**** degrees, but less than** **$180°$**** degrees.**

Acute angles can appear in triangles, parallelograms, and other geometric shapes.

Choose the appropriate triangle according to the following:

Angle B equals 90 degrees.

Test your knowledge

Question 1

Does the drawing show an adjacent angle?

Question 2

Does the drawing show an adjacent angle?

Question 3

Does the drawing show an adjacent angle?

Related Subjects

- Area of Equilateral Triangle
- Area of a Scalene Triangle
- Area of Isosceles Triangle
- Area of a Deltoid (Kite)
- Congruent Rectangles
- Acute triangle
- Obtuse Triangle
- Scalene triangle
- Triangle Height
- Sum and Difference of Angles
- Types of Angles
- Perpendicular Lines
- Exterior angle of a triangle
- Exterior angle of a triangle
- Perimeter
- Perimeter
- Perimeter
- Perimeter
- Angles In Parallel Lines