| A | B |
|---|
| Alternate Interior Angles Theorem | If two parallel lines are cut by a transversal, then act pair of alternate interior angles are congruent. |
| Consecutive Interior Angles Theorm | If two parallel lines are cut by a transversal, then each pari of consecutive interior angles are supplementary. |
| Alternate Exterior Angles Theorem | If two parallel lines are cut by a transversal, then each pair of alternate exterior angles are congruent. |
| Perpendicular Transversal Theorem | If a transversal is perpendicular to one of the two parallel lines, then it is perpendicular to the other. |
| Alternate Exterior Angles Converse | IF two ines are cut by a transversal so that the alternate exterior angles are congruent, then the lines are parallel. |
| Consecutive Interior Angles Converse | If two lines are cut by a transversal so that consecutive interior angles are supplementary, then the lines are parallel. |
| Alternate Interior Angles Converse | If two lines are cut by a transversal so that alternate interior angles are congruent, then the lines are parallel. |
| Perpendicular Transversal Converse | In a plane, if two lines are perpendicular to the same line, then they are parallel. |
| Two lines Equidistant From a Third | In a plane, if two lines are equidistant from a third, then the two lines are parallel to each other. |
| Parallel Lines | Coplanar lines that do no intersect |
| Transversal | A LINE that intersects two or more coplanar lines at TWO different points. |
| Interior Angles | Angles on the INSIDE of parallel lines cut by a transversal |
| Exterior Angles | Angles on the OUTSIDE of parallel lines cut by a transversal |
| Consecutive Interior Angles | Angles that are on the SAME side of the transversal and INSIDE the two lines. |
| Alternate INTERIOR Angles | Angles BETWEEN two lines and on OPPOSITE sides of a transversal. |
| Alternate EXTERIOR Angles | Angles that lie OUTSIDE a pair of lines and on OPPOSITE side of a transversal |
| Corresponding Angles | Two angles that are formed by two lines and transversal that occupy corresponding positions. |
| Slope | Ratio of change along the y-axis to the change along the X-Axis. |
| Rate of Change | How quantity Y changes in relationship to quantity X |
| Slope Intercept Form | Y=mx + b where m is the slope and b is the y-intercept of the line. |
| Point-Slope Form | y-y1 = m(x-x1), where m is the slope and (x1, y1) is the point the line is passing through |
| Corresponding Angles Postulate | If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent. |
| Converse of the Corresponding Angles Postulate | If two lines and a transversal form corresponding angles that are congruent, then the two lines are parallel. |
