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Place the center point of the protractor at the vertex of the angle and one of the lines of the angle along the zero line of the protractor. The measure of the angle will then be where on the protractor's angular scale the other line of the angle lies.

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14y ago
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Q: How do you use a half-circle protractor to measure an angle?
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Related questions

When do you use protractor?

a protractor is used to measure an angle


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