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Geometry Ch 1 Vocab
| Term | Definition |
|---|---|
| basic, undefined term of geometry, its a location named by a capitol letter and represented by a dot | point |
| has no thickness or width, has arrowhead at each end, extends infinitley in opposite directions | line |
| flat surface made of points that extends indefinitly in all directions | plane |
| a measurable part of a line that consists of 2 points called endpoints and all the points between them | segment |
| a part of a line and has 1 endpoint and extends infinetly in one direction | ray |
| points that lie on the same line | collinear |
| points that lie on the same plane | coplanar |
| the intersection of 2 noncollinear rays at a common endpoint. rays are called sides and the common endpoint is called the vertex | angle |
| 2 angles that are next to each other and share a common side | adjacent angles |
| 2 angles across from each other on intersecting lines and are always congruent | vertical angles |
| 2 angles that are adjacent and supplementary that form a straight line | linear pair |
| any 2 angles whose sum is 90 degrees | complementary |
| and 2 angles whose sum is 180 degrees | supplementary |
| 2 lines that intersect at a right angle, symbol is _l_ | perpendicular |
| a ray that divides an angle into 2 congruent angles | bisector |
Created by:
katiekat1334