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When two lines come together at a point, they form an angle. The amount of that angle can be represented in various ways, including what we call degrees or radians. If you were to take a compass and protractor and measure a complete circle at the point of intersection, we call that 360 degrees, or 2 pi radians. If you had an angle that subtended one eight of a circle, we call that 45 degrees, or pi / 4 radians.

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∙ 15y ago
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