| A | B |
|---|
| point | geometric object with no dimenssions |
| line | collection of points along a straight path |
| collinear | points that lie on the same line |
| plane | flat surface that extends endlesslyin all directions |
| coplaner | points that lie on the same plane |
| line segment | part of a line that has two endpoints |
| ray | part of a line with one endpont |
| angle | formed from two rays with a common endpoint |
| vertex | common endpoint of two rays that form an anglwe |
| linear angles | pair of adjacent angles whose noncommon sides are opposite rays |
| adjacent angles | tow non-overlapping angles that share a common ray and vertex |
| obtuse angle | has a measure greater than 90 and less than 180 degrees |
| side | one of the rays that form an angle |
| right angle | measure of exactly 90 degrees |
| vertical angle | nonadjacent angles formed by intersecting lines |
| complementary angles | pair of angles with combined measures of 90 degrees |
| supplementary angles | combined measures of 180 degrees |
| straight angle | angle that measures exactly 180 degrees |
| bisector | point, line, or plane that divides a figure into congruent halves |
| acute | an angles having a measure greater than 0 and less than 90 degrees |
