| A | B |
| congruent | Same size, same shape |
| vertical angles | angles whose sides form 2 pairs of opposite rays |
| supplementary | two angles whose angles measures have the sum of 180 |
| complimentary | 2 angles whose measures have the sum of 90 |
| linear pair | 2 adjacent angles whose noncommon sides are opposite rays |
| transversal | line that intersects 2 or more coplanar lines at different points |
| alternative interior angles | 2 angles that are formed by 2 lines and a transversal and that lie between the 2 lines on opposite sides of the transversal |
| alternative exterior angles | 2 angles that are formed by 2 lines and a transversal and that lie outside the 2 lines on opposite sides of the transversal |
| consecutive interior angles | 2 angle that are formed by 2 line and a transversal and that lie between the two lines on the same side of the transversal |
| corresponding angles | 2 angles that are formed by 2 lines and a transversal and corresponding positions |
| similar | equal ratios |
| Law of Syllogism | If p is to q and q is to r are true conditional statements, then p is to r is true |