point, a dot that represents a place, ray, a part of a line that has one start point and goes on forever in the other way., angle, 2 rays that share a common endpoint, right angle, angle that has a square corner of 90 degrees, acute angle, angle that measures smaller than 90 degrees and more than 0 degrees., obtuse angle, angle that measures more than 90 degrees and less than 180 degrees., straight angle, straight line; measures 180 degrees.

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