Math vocab
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Created by:
FineFamily on November 30, 2011
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30 terms
Terms | Definitions |
|---|---|
 Bisector | Divides a line segment or angle into two equal parts |
| Congruent | Having the exact same shape or size |
| Parallel | Two lines in the same plane that are the same distance apart and will NEVER touch. |
| Perpendicular | Two lines that intersect to form right angles |
| Line segment | The part of a line that is between two points |
| Endpoint | The points st the end of a line segment |
| Intersection | The point at which two or more lines intersect or cross |
| Ray | A line that starts at a point and goes on forever in one direction. |
| Flip | A reflection |
| Slide | A Translation |
| Turn | rotation |
| coordinate plane | a plane is a flat surface with no thickness. Coordinate planes have lines on them |
| construction | to draw geometric shapes and lines with a compass and a straight edge |
| transformation | reflection, translation, rotation and dilation are examples. |
| rotation | turning a figure around a fixed point |
| reflection | a lin eon a plane is like a mirror. A geometric figure is flipped over on the other side of the line |
| Dilation | changes the size of a figure |
| complementary | exactly 90* |
| supplementary | exactly 180* |
| vertex | common end point of two rays |
| angle | formed by two rays with a vertex. The two rays are the sides of the angle |
| Right angle | exactly 90* |
| Acute angle | less than 90* |
| Obtuse angle | more than 90 but less than 180 |
| Straight angle | exactly 180* |
| skew | lines that are not on the same plane and do not intersect but they aren't parallel |
| adjacent angles | have a common vertex and a common side but no common interior points |
| vertical angles | the opposite angles formed by two intersecting lines. |
| Transversal | a line that intersects 2 or more lines |
| Corresponding angles | On the same side of the transversal and are both above and below . |
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