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geometry
9th grade geometry vocab
| Question | Answer |
|---|---|
| a straight path that has no thickness and extends forever. it has one dimension. it is represented with 2 arrowheads | line |
| is part of a line consisting of 2 points and all points between them | segment |
| a statement that is accepted as true without proof. also called axiom | postulate |
| to divide a segment into 2 congruent segments | bisect |
| segments that have the same length | congruent segment |
| has no dimension. it is represented by a dot | point |
| a flat surface with 2 dimensions that has no thickness and extends forever. it looks like a floor or a wall | plane |
| measurement of earth | geometry |
| to have the same size and shape | congruent |
| points that lie in the same line | collinear |
| a point at one end of a segment or starting point of a ray | endpoint |
| a word without a formal definition. point, line, and plane are known as undefined terms | undefined term |
| father of geometry and wrote the elements | Euclid |
| points that lie in the same plane | coplanar |
| 2 rays that have a common endpoint and form a line | opposite rays |
| part of a line that starts at an endpoint and extends forever in one direction | ray |
Created by:
anns123
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