Point, an exact location in space, Line, a straight path that continues forever in both directions, Ray, part of a line that has one endpoint and continues forever in one direction, Line segment, the part of a line between two endpoints., Angle, is formed by two rays or line segments that share an endpoint, which is called the vertex, Intersecting lines, lines that meet at one point, Perpendicular lines, lines that form a right angle (90 degrees), Parallel lines, lines that never cross, Acute angle, less than 90 degrees, Obtuse angle, more than 90 degrees but less than 180 degrees, Right angle , equal to 90 degrees, Straight angle , equal to 180 degrees, an angle that forms a straight line.

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