Let's work it out together.
Work through one checkpoint at a time. Your answer area opens after the reasoning.
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Checkpoint 1
The horizontal ray starts at 0° on the right side of the degree scale.
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Checkpoint 2
Each small tick interval represents 15°, and the numbered ticks mark every 30°.
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Checkpoint 3
Count 9 intervals from 0° to the second ray, then multiply that count by 15°.