| A | B |
|---|
| Corresponding Angles | angles on the same side of parallel lines and the same side of the transversal |
| Perpendicular lines | lines that intersect at a right angle |
| Parallel Lines | Coplanar lines which do not intersect |
| Skew Lines | Noncoplanar lines which do not intersect |
| Alternate Exterior Angles | angles on the exterior of the parallel lines and on alternate sides of a transversal |
| Alternate Interior Angles | angles on the interior of parallel lines and on alternate sides of a transversal |
| Vertical Angles | angles opposite intersecting lines |
| Consecutive Interior Angles | Angles on the interior of parallel lines and on the same side of the transversal |
| y-intercept | the intersection of the y-axis and a line |
| x-intercept | the intersection of the x-axis and a line |
| slope | the ratio of the difference in y-coordinate and the difference in x-coordinates of points on a line |
| converse | a conditional statement in which the hypothesis and conclusion are switched |
| contrapositive | a conditional statement in which the hypothesis and conclusion are switched and negated |
| transversal | a line which intersectw two coplanar lines and is on the same plane |
| Corresponding Angle Converse | If corresponding angles are congruent, then the lines are parallel |
| Corresponding Angle Theorem | If the lines are parallel, then the corresponding angles are congruent |
