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Geometry C1
| Term | Definition |
|---|---|
| point | A location in space that is represented by a dot and has no dimension |
| line | one dimensional geometric figure that extends in two opposite directions without end |
| plane | A flat surface made up of points that has two dimensions and extends without end and is represented by a shape that looks like a floor or wall |
| collinear points | points that lie on the same line |
| coplanar points | points that lie in the same plane |
| line segments | consists of two endpoints and all the points between them |
| ray | a geometric figure that consists of the endpoint A and all points on line AB that lie on the same side of point as point B |
| opposite rays | If Point C lies on a line AB between A and B then ray AC and ray CB are opposite |
| intersection | the set of points two or more geometric figures have in common |
| postulate | a rule that is accepted without proof |
| axiom | a rule that is accepted without proof |
| coordinate | a real number that corresponds to a point on a line |
| distance | the absolute value of the difference of two coordianates on a line |
| construction | a geometric drawing that uses a limited set of tools usually a compass and a straightedge |
| congruent segments | line segments that have the same length |
| midpoint | the point that divides a segment into two congruent segments |
| segment bisector | a point ray line line segment or plane that intersects the segment at its midpoint |
| convex polygon | a polygon |
| concave polygon | a polygon in which at least one line that contains a side of the polygon contains a point in the interior of the polygon |
| polygon | a closed plane figure formed by three or more line segments |
| side | line segment that form polygons |
| vertex | intersection of line segments that form geometric figures |
| angle | a set of points consisting of two different rays that have the same end point |
| side of an angle | the rays on an angle |
| interior of an angle | the region that contains all the points between sides of an angle |
| exterior of an angle | the region that contains all the points outside of an angle |
| measure of an angle | the absolute value of the difference between the real numbers matched with two rays that form the angle on a protractor |
| acute angle | an angle that measures greater then 0 but less then 90 |
| right angle | an angles that has a measure of 90 |
| obtuse angle | an angle that has a measure greater then 90 and less then 180 |
| straight angle | an angle that has a measure of 180 |
| congruent angle | two angles that have the same measure |
| angle bisector | a ray that divides an angle into two angles that are congruent |
| protractor | a tool that helps you approximate the measure of an angle |
| degrees | a unit of measurement of angles |
| complementary angles | two angles whose measure have a sum of 90 |
| supplementary angles | two angles whose measure have a sum of 180 |
| adjacent angles | two angles that share a common vertex and side but have no common interior parts |
| linear pair | two adjacent angles whose noncommon sides are opposite rays |
| vertical angles | two angles whose sides for two pairs of opposite rays |
Created by:
Kyle GG