| A | B |
|---|
| If 2 distinct points lie in a plane, | then the line containing them lies in the plane |
| If 2 distinct planes intersect | then their intersection is a line. |
| If B is between A and C, | then AB+BC=AC. |
| If ray BC is between ray BA and ray BD | then <ABC+<CBD=<ABD |
| If 2 angles are a linear pair, | then they are supplimentary (sum is 180 degrees). |
| If 2 angles are supplimentary to the same angle or to congruent angles, | then they are congruent. |
| If 2 angles are compliments to the same angle or to congruent angles | then they are congruent. |
| If 2 angles are vertical angles, | then they are congruent. |
| If 2 lines are parallel to the same line, | then they are parallel to each other. |
| If 2 lines are perpindicular to the same line, | then the 2 lines are parellel. |
| If 2 lines intersect | then they meet at one point. |
| If there is one line and one point not on the line, | then there is one parellel line through that point. |
| If there is one line and one point not on the line, | then there is exactly one line through the point perpindicular to the first line. |
| If 2 lines are perpindicular, | then the lines intersect to form 4 right angles. |
| All right angles are | congruent. |
| If two lines intersect to form a pair of adjacent congruent angles, | then the lines are perpindicular. |
| if you have parallel lines cut by a transversal | then corresponding angles are congruent. |
| If you have parellel lines cut by a transversal, | then the pairs of alternate interior angles are congruent. |
| If you have parellel lines cut by a transversal, | then the pairs of consecutive interior angles are congruent. |
| If you have 2 parellel lines cut by a transversal, | then the pairs of alternate exterior angles are congruent. |
| If a transversal is perpindicular to 1 of 2 parellel lines, | then it is perpindicular to the second. |
| If we have 2 lines cut by a transversal and the corresponding angles are congruent, | then the lines are parellel. |
| if we have 2 lines cut by a transversal and the slternate interior angles are congruent, | then the lines are parellel. |
| If we have 2 lines cut by a transversal and the consecutive interior angles are supplimentary, | then the lines are parellel. |
| If we have 2 lines cut by a transversal and the alternate exterior angles are congruent, | then the lines are parellel. |
| Every triangle is | congruent to itself. |
| If triangle ABC congruent to triangle DEF, | then triangle DEF is congruent to triangle ABC |
| If triangle ABC is congruent to triangle PQR and triangle PQR is congruent to triangle TUV | then triangle ABC is congruent to triangle TUV. |
| If we have 2 lines cut by a transversal and the alternate exterior angles are congruent, | then the lines are parellel. |
| If we have 2 lines cut by a transversal and the consecutive interior angles are supplementary, | then the lines are parellel. |
| If we have 2 lines cut by a transversal and the alternate interior angles are congruent, | then the lines are parellel. |
| If we have 2 lines cut by a transversal and the corresponding angles are congruent, | then the lines are parellel. |
| If a transversal is perpindicular to one of two parellel lines, | then it is perpindicular to the second. |
| If you have parellel lines cut by a transversal, | then the pairs of alternate exterior angles are congruent. |
| If you have parellel lines cut by a transvesral, | then the pairs of consecutive interior angles are supplementary. |
| if you have parellel lines cut by a transversal, | then the pairs of alternate interior angles are congruent. |
