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Lines & Angles
2022-2023
| Term | Definition |
|---|---|
| line | no bends and extends in both directions indefinitely |
| line segment | a piece or part of a line that has two endpoints |
| point | an exact position or location |
| ray | has a beginning point and goes indefinitely in only one direction |
| angle | the figure, in which two rays meet at a common point called the vertex |
| perpendicular lines | two lines that meet or intersect each other at right angles (90°) |
| parallel lines | two or more lines that lie in the same plane and never intersect each other |
| acute angle | angles that measure less than 90 degrees |
| obtuse angle | angles that measure more than 90 degrees |
| right angle | angles that measure exactly 90 degrees |
| straight angle | angles that measure 180 degrees |
| symmetry | when two or more parts are identical after a flip, slide or turn |
| two dimensional figure | a flat figure or a shape that has two dimensions—length and width |