Ontario Curriculum Expectation:
5.E2.4 explain how protractors work, use them to measure and construct angles up to 180Â°, and use benchmark angles to estimate the size of other angles.
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1 of 101. Question
1. What is the measure, in degrees, of the angle shown?
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2 of 102. Question
2. Angles A, B, C, and D are shown. Which angle measures 65 degrees?
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3 of 103. Question
3. What is the measure, in degrees, of the angle shown? Fill in the blank with your answer.

degrees
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4 of 104. Question
4. A protractor is used to measure an angle in degrees.
Â Â Which location shows where to place the vertex of the angle being measured?
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5 of 105. Question
5. Angles are shown on the protractor. Which angles measure 75 degrees?
Â Â Choose the TWO correct answers.
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6 of 106. Question
6. If Angle A is 40 degrees, what is a good estimate of the angle of Angle B?
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7 of 107. Question
7. If Angle A is 150 degrees, what is a good estimate of the angle of Angle B?
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8 of 108. Question
8. What is the measure, in degrees, of the angle shown? Fill in the blank with your answer.

degrees
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9 of 109. Question
9. If Angle A is 90 degrees, what is a good estimate of the angle of Angle B?
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10 of 1010. Question
10. What is the measure, in degrees, of the angle shown? Fill in the blank with your answer.

degrees
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