Line - A straight set of points that extend in opposite directions. It has no end points, and goes on for infinity., Line Segment - Part of a line, has two end points., Ray - Part of a line that has one end point, and extends in one direction for infinity., Intersecting - When two lines meet, not at a 90 degree angle., Parallel - Straight lines that will never meet or intersect., Perpendicular  - Lines that intersect at exactly a 90 degree angle., Horizontal - A line that goes from left to right., Vertical - A line that goes up and down., End Point - The point where a line segment or ray ends.,

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