Measuring Angles Worksheet
A Grade 4 math worksheet focusing on understanding and measuring angles using a protractor.
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Measuring Angles Worksheet
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Read each question carefully and answer to the best of your ability. Use a protractor to measure the angles where indicated.
1. Which of the following describes an acute angle?
An angle that measures exactly 90 degrees.
An angle that measures less than 90 degrees.
An angle that measures more than 90 degrees but less than 180 degrees.
An angle that measures exactly 180 degrees.
2. What type of angle is shown in the diagram below?
Acute angle
Right angle
Obtuse angle
Straight angle
3. A angle measures exactly 180 degrees.
4. A angle measures less than 90 degrees.
5. Use a protractor to measure the angle shown below. What is its measure?
6. Draw an angle that measures 120 degrees in the space below.
Match each angle measure with its correct angle type.
7. 45 degrees
a. Right angle
8. 90 degrees
b. Obtuse angle
9. 150 degrees
c. Acute angle
10. All angles are measured in degrees.
True
False
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