| A | B |
|---|
| supplementary | two angles that sum to 180 degrees |
| complementary | two angles that sum to 90 degrees |
| midpoint | a point on a segment that divides it in 2 congruent parts |
| bisect | to divide a segment into 2 congruent parts |
| midpoint formula | {(x +x)/2, (y+y)/2} |
| angle bisector | a ray that divides an angle into 2 congruent parts |
| adjacent | angles that share a common side or ray. |
| hypothesis | the if part of an if-then statement |
| conclusion | the then part of an if-then statement |
| vertical angles | angles that are not adjacent and their sides are formed by |
| linear pair | 2 adjacent angles whose noncommon sides are on the |
| segment bisector | a point, line, ray, segment or plane that divides a segment |
| if-then statement | a statement that has 2 parts if is the hypothesis and then is the conclusion |
| Law of Detachment | If the hypothesis of a true if-then statement is true then |
| Law of Syllogism | If statement p, then statement q is true and if statement q |
| deductive reasoning | uses facts, definitions, theorems, postulates, laws of logic |
