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Lines and Angles
Term | Definition |
---|---|
Right Angle | an angle that is exactly 90 degrees and looks like an L |
Acute Angle | an angle that is less than 90 degrees |
Obtuse Angle | an angle that is greater than 90 degrees |
Straight Angle | an angle that looks like a straight line and measures to 180 degrees |
Angle | 2 rays that meet at the same point |
Ray | it has one endpoint and the other side goes on forever |
Segment | a piece of a line. It can be shown with 2 points or no points. It has no arrows though!!! |
Line | a line that goes on forever in both directions, it is shown with arrows |
parallel | 2 lines that will never meet even if they go on forever |
intersect | 2 lines that touch or cross over each other |
perpendicular | 2 lines that intersect, BUT ALSO when they meet it is at a 90 degree angle |
point | looks like a dot, it shows a LOCATION on a line. |