Geometry Vocabulary Part I
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20 terms
Terms | Definitions |
|---|---|
 isosceles triangle | a triangle with two equal sides |
| vertex | The common endpoint of an angle |
| obtuse triangle | a triangle with one obtuse angle |
| right triangle | a triangle with one right angle |
| scalene triangle | a triangle with no two sides of equal length |
| equilateral triangle | a triangle with three equal sides |
| straight angle | an angle that measures 180 degrees |
| obtuse angle | An angle more than 90 degrees |
| right angle | an angle that measures 90 degrees |
| angle | two rays with a common endpoint |
| acute angle | An angle less than 90 degrees |
| plane | An endless flat surface |
| line segment | part of a line with two endpoints |
| point | An exact location in space |
| intersecting lines | lines that cross at one point |
| ray | Part of a line that has one endpoint and extends forever in one direction. |
| line | A straight path of points that goes on forever in two directions |
| perpendicular lines | Two lines that intersect to form right angles |
| parallel lines | Lines in the same plane that do not intersect |
| Skew lines | Lines that do not intersect, are not parallel, and are not in the same plane |
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