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Concept

Degree

A degree, like a radian, is a unit for the measure of an angle. It is denoted by the degree symbol Degrees can be interpreted as the amount of turn in the rotation between the rays of an angle. Therefore, an angle measure can range from to
Angle AOB is shown, then ray OB is rotated 360 degrees
As can be seen, a circle measures A protractor is used to measure an angle in terms of degrees.
A protractor measures a central angle AOB on a circle, with an angle measure of 45 degrees.
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