Ontario Curriculum Expectation:
5.E2.4 explain how protractors work, use them to measure and construct angles up to 180°, and use benchmark angles to estimate the size of other angles.
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1 of 201. Question
1. Classify the angle below as obtuse, acute, right, or straight.
CorrectIncorrect 
2 of 202. Question
2. Classify the angle below as obtuse, acute, right, or straight.

This angle is .
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3 of 203. Question
3. This is a right angle.
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4 of 204. Question
4. Classify the angle below as obtuse, acute, right, or straight.
CorrectIncorrect 
5 of 205. Question
5. Classify the angle below as obtuse, acute, right, or straight.

This angle is .
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6 of 206. Question
6. Classify the angle below as obtuse, acute, right, or straight.

This is a angle.
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7 of 207. Question
7. This is an acute angle.
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8 of 208. Question
8. Classify the angle below as obtuse, acute, right, or straight.
CorrectIncorrect 
9 of 209. Question
9. Classify the angle below as obtuse, acute, right, or straight.

This angle is .
CorrectIncorrect 

10 of 2010. Question
10. Classify the angle below as obtuse, acute, right, or straight.
CorrectIncorrect 
11 of 2011. Question
11. This is a straight angle.
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12 of 2012. Question
12. Classify the angle below as obtuse, acute, right, or straight.

This angle is .
CorrectIncorrect 

13 of 2013. Question
13. Classify the angle below as obtuse, acute, right, or straight.
CorrectIncorrect 
14 of 2014. Question
14. This is an obtuse angle.
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15 of 2015. Question
15. Classify the angle below as obtuse, acute, right, or straight.

This angle is .
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16 of 2016. Question
16. Classify the angle below as obtuse, acute, right, or straight.

This angle is .
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17 of 2017. Question
17. This angle is obtuse.
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18 of 2018. Question
18. This is a right angle.
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19 of 2019. Question
19. Classify the angle below as obtuse, acute, right, or straight.

This angle is .
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20 of 2020. Question
20. Classify the angle below as obtuse, acute, right, or straight.
CorrectIncorrect