Classifying Angles Worksheet
A Grade 8 math worksheet focused on classifying angles, including acute, obtuse, right, straight, reflex, complementary, and supplementary angles.
Includes
Standards
Topics
Classifying Angles
Name:
Date:
Score:
Read each question carefully and classify the angles as instructed. Use the provided diagrams to help you answer the questions.
1. An angle measuring 90 degrees is called a:
Acute angle
Obtuse angle
Right angle
Straight angle
2. Which type of angle measures greater than 90 degrees but less than 180 degrees?
Acute angle
Obtuse angle
Reflex angle
Right angle
3. An angle that measures exactly 180 degrees is called a angle.
4. Two angles are if their sum is 90 degrees.
5. Two angles are if their sum is 180 degrees.
6. Classify the angle shown below. Explain your reasoning.
7. Classify the angle shown below. Explain your reasoning.
8. A reflex angle is always less than 180 degrees.
True
False
9. Complementary angles add up to 180 degrees.
True
False
Match each angle description with its correct classification.
10. Angle less than 90°
a. Straight Angle
11. Angle equal to 180°
b. Acute Angle
12. Angle between 180° and 360°
c. Obtuse Angle
13. Angle between 90° and 180°
d. Reflex Angle
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