| A | B |
|---|
| exterior angles | outside the two lines |
| interior angles | between the two lines |
| transversal | Line that intersects 2 or more coplanar lines at different points |
| Corresponding angles | occupy matching positions |
| Alternate exterior angles | outside the lines on opposite sides of the transversal |
| Alternate interior angles | between the two lines on the opposite sides of the transversal |
| Same side interior angles/ consecutive interior angles | between the 2 lines on the same side of the transversal |
| Corresponding Angles Postulate: | If 2 parallel lines are intersected by a transversal, then the corresponding angles are congruent ( if m is parallel to n, then and 1 is congruent to angle 2) |
| alternate interior/exterior angles thereom | if 2 parallel lines are intersected by a transversal, then alternate interior/exterior angles are congruent |
| Same Side interior angles thereom | If 2 parallel lines are intersected by a transversal, then same-side interior angles are supplementary |
| converse of the corresponding angles postulate | If two lines are intersected by a transversal and corresponding angles are congruent, then the lines are parallel |
| convers of the alternate interior/exterior angles thereom | if two lines are intersected by a transversal and alternate interior/exterior angles are congruent, then the lines are parallel |
| converse of the same-side interior angles thereomd | if two lines are intersected by a transversal and same-side interior angles are supplementary, then the lines are parallel |
