What is the rule for rotating 90 degrees clockwise?

Related questions

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2. What did they say before clockwise?
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4. Which way do you unscrew?
5. What is the difference between anti clockwise and counterclockwise?
6. Why do screws tighten clockwise?
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8. Which way is counter clockwise right or left?
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Tags

1. #objects
2. #rotation
3. #general
4. #there
5. #object
6. #degrees
7. #rules
8. #measures
9. #degree
10. #using
11. #common