| A | B |
| Corresp. Angles Post (CAP) | If 2 parallel lines are cut by a transversal, then corresp. angles are ≅.,  |
| Alt Int Angle Thm | If 2 parallel lines are cut by a transversal, then alt. int angles are congruent.,  |
| Consec. Int. Angle Thm | If 2 parallel lines are cut by a transversal, then consec. int angles are suppl.,  |
| Alt Ext Angle Thm | If 2 parallel lines are cut by a transversal, then alt ext angles are congruent.,  |
| Perp Transversal Thm | If a || b, a ⟘ t, then b ⟘ t.,  |
| Converse of Corresp. Angles Post. | If ∠1 ≅ ∠3, then a || b.,  |
| Converse of the Alt Int Angle Thm | If ∠6 ≅ ∠8, then p || q.,  |
| Converse of Alt Ext Angle Thm | If ∠1 ≅ ∠3, then a || b.,  |
| Converse of Consec Int Angle Thm | If m∠4 + m∠5 = 180, then p || q.,  |
| Perp Transversal Converse | If p ⟘ r and q perpendicular ⟘ r, then p|| q.,  |