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Geometric Figures
Vocabulary for Geometric Figures Unit Grade 7
| Term | Definition |
|---|---|
| Acute Angle | An angle that measures less than 90 degrees, but greater that 0 degrees. |
| Adjacent Angles | Two angles created by intersecting lines and share a common ray. |
| Angle | Two rays that meet at a common point. |
| Complementary Angles | A pair of angles whose sum is 90 degrees. |
| Congruent Angles | Two angles that have equal degree measure. |
| Corresponding Angles | Angles that are in the same positions of different intersections created by a transversal intersecting two or more parallel lines. |
| Equilateral Triangle | A triangle that has all sides of equal length. |
| Intersecting Lines | Two lines that meet at a point. |
| Isosceles Triangle | A triangle that has at least two sides of equal measure. |
| Line | A one dimensional figure that does on forever in two directions. |
| Line Segment | A one dimensional figure with two endpoints. |
| Acute Triangle | A triangle that has three acute angles. |
| Obtuse Angle | An angle that measures greater than 90 degrees, but less than 180 degrees. |
| Obtuse Triangle | A triangle that has one obtuse angle. |
| Parallel Lines | Two lines that in the same plane that will never intersect. |
| Perpendicular Lines | Two lines that intersect forming four right angles. |
| Plane | A two dimensional (flat) surface that extends forever. |
| Point | An exact location in space. |
| Ray | A one dimensional figure that has one endpoint and goes on forever in one direction. |
| Right Angle | An angle that measures exactly 90 degrees. |
| Right Triangle | A triangle that has one 90 degree angle. |
| Scalene Triangle | A triangle that has no sides of equal length. |
| Straight Angle | An angle that measures exactly 180 degrees. |
| Supplementary Angles | A pair of angles whose sum is 180 degrees. |
| Transversal | A line that cuts through two or more parallel lines. |
| Vertical Angles | Two angles created by intersecting lines that are equal in measure, but do not share a common ray. |