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6 lines
794 B
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6 lines
794 B
Plaintext
The sign denoting in a [https://unicode-table.com/en/collections/mathematical-signs/ mathematical notation] a geometric figure is an "angle" (and it is itself). Example of use: ∠ABC = 45 °.
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The angle is formed by two rays emanating from one point (the top of the corner). It is often indicated by three points, ∠ABC. Here B is a vertex, and A and C are points lying on different rays (sides of the angle). The corners are given the designation in [https://unicode-table.com/en/sets/greek-symbols/ Greek letters], for example, ∠α.
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The angle value (angular measure) can be calculated in different ways: in [https://unicode-table.com/en/00B0/ degrees], radians, turns or grads. If both sides of the angle lie on the same line, then this angle is called unfolded and its value is 180 °.
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