Measuring Angles Worksheet
Grade 8 Math worksheet focused on measuring angles using a protractor and understanding angle relationships.
Includes
Standards
Topics
Measuring Angles
Name:
Date:
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Read each question carefully and follow the instructions. Use a protractor to measure angles where indicated. Show all your work.
1. Which type of angle measures exactly 90 degrees?
Acute angle
Obtuse angle
Right angle
Straight angle
2. What is the sum of angles in a triangle?
90 degrees
180 degrees
270 degrees
360 degrees
3. An angle that measures less than 90 degrees is called an angle.
4. Two angles whose sum is 90 degrees are called angles.
5. A angle measures exactly 180 degrees.
6. Use a protractor to measure the angle below and state its type (acute, obtuse, right, or straight).
Measurement:
Type:
7. Draw an angle that measures 135 degrees. Label its vertex and rays.
8. Complementary angles always add up to 180 degrees.
True
False
9. A straight angle forms a straight line.
True
False
10. In the diagram below, lines AB and CD intersect at point E. If ∠AEC = 40°, find the measures of ∠BED, ∠CEB, and ∠AED.
∠BED =
∠CEB =
∠AED =