Check your knowledge about classifying angles by taking this online angles test. You will have a time limit of 20 minutes to complete this test.

This test has ten problems that determine how well you can identify different kinds of angles.

Important Facts About Classifying Angles:

- An acute angle measures less than 90 degrees.
- A right angle measures exactly 90 degrees.
- An obtuse angle measures more than 90 degrees, but less than 180 degrees.
- A straight angle measures exactly 180 degrees.

This test is based on the following Common Core Standards:

**CCSS.Math.Content.4.G.1**

Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.

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