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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