point, an exact location in space, line segment, part of a line with 2 endpoints, ray, part of a line that has one endpoint and continues on forever in one direction, right angle, an angle that forms a square corner; an angle that is 90°, acute angle, open less than a right angle; any angle less than 90°, obtuse angle, an angle that is more than a right angle, but less than a straight angle; any angle that is more than 90° but less than 180°, straight angle, an angle that forms a straight line; an angle that is 180°

Lines, Rays & Angles

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