| A | B |
| Addition property of Equality | If a=b and c=d then a+c=b+d |
| Subtraction property of Equality | If a=b and c=d then a-c=b-d |
| Multiplication property of Equality | If a=b then ca=cb |
| Divison property of Equality | If a=b and c does not =0 thena/c=b/c |
| Substitution property of Equality | If a=b then a can be substituted for b and vice versa |
| Reflexive property of Equality | a=a |
| Symetric property of Equality | If a=b then b=a |
| Transitive property of Equality | If a=b and b=c then a=c |
| Reflexive property of Congruence | DE=~DE |
| Symetric property of Congruence | If DE=~FG then FG=~DE |
| Transitive property of Congruence | If DE=~FG and FG=~JK then DE=~JK |
| Distributive Property | a(b+c)=ab+ac |
| Midpoint Theorem | If M id the midpiont of AB then 2AM=AB and AM=1/2AB |
| Angle bisector theorem | IF BX is the bisector of ABC then: 2mABX=mABC and mABX=1/2mABC |
| Theorem 1-4 | Adjacent angles formed by perpendicular lines are congruent |
| Theorem 1-5 | If 2 lines form congruent adjacent angles those lines are perpindicular |
| Theorem 1-6 | If the exterior sised of 2 aadjacent acute angles are perpindicular tose angles are complementery |
| Theorem 1-7 | If 2 angles are supplements of congruent angles those angles are congruent |
| Theorem 1-8 | IF 2 angles are complements of congruent angles then tose angles are congruent |