The angle between a line pointing north and a line pointing east is 90 degrees.
On a clock, the angle between 12 and 1 is 30 degrees.
The angle between 12 O’Clock and 2 O’Clock is 60 degrees.
Appendix A
Angles are additive. The angle between 12 and 5 is the sum of the angle between 12 and 2 and the angle between 2 and 5.
As a homework question, what are these three angles?
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