|
 Point | a location represented by a capital letter |
| space | the set of all points |
| non collinear | points that do NOT lie on the same line |
| net | a two dimensional figure that can be "folded" into a three dimensional figure |
| plane | a flat surface that has no thickness and extends without end |
| coplanar | points that lie on the same plane |
| postulate | a statement that is accepted as true |
| opposite rays | two collinear rays that share the same endpoint |
| isometric drawing | a three dimensional figure drawn on a two dimensional surface |
| skew lines | lines that are non coplanar, never intersect, and are not parallel |
| one to one correspondence | a point on a line is assigned exactly one value |
| inductive reasoning | observing patterns, therefore being able to tell what the next part of a sequence will be |
| coordinate | the number or value on a number line |
| congruent | equal lengths |
| midpoint | a point that divides a segment into two equal parts |
| bisector | a line, ray, or segment that passes through a midpoint of a segment |
| angle | a figure that is formed by two rays that share an endpoint |
| conjecture | a conclusion reached by using inductive reasoning |
| acute angle | an angle that measures between 0 degrees and 90 degrees |
| right angle | an angle that measures 90 degrees |
| obtuse angle | an angle that measures between 90 degrees and 180 degrees |
| straight angle | an angle that measures 180 degrees |
| counter example | an example that proves a conjecture false |
| adjacent angles | coplanar angles with a common side, a common vertex, but no common interior points |
| angle bisector | a ray that divides an angle into two equal measures |
| vertical angles | two angles that share a vertex and the sides are opposite rays |
| supplementary angles | two angles that add up to equal 180 degrees |
| complementary angles | two angles that add up to equal 90 degrees |
| perpendicular | two lines that intersect to form right angles |
| sides of an angle | the rays of an angle |
| vertex of an angle | where the rays of an angle meet |
| collinear | three or more points that lie on the same line |
| line | a figure that is made up of at least two points and extends in both directions without end |
| ray | a figure that has one endpoint and extends in another direction without end |
| segment | a figure that is made up of two endpoints |
| parallel lines | coplanar lines that never intersect |