Here's the completed two-column proof with the appropriate statements and reasons filled in:
| Statement | Reason | |-------------------------------|---------------------------------------------| | 1. ∡A + ∡B = 180 | 1. Linear pairs are supplementary | | 2. ∡A = ∡E | 2. Corresponding Angles Postulate | | 3. ∡E + ∡C = 180 | 3. Substitution | | 4. ∠E & ∠C are supplementary | 4. Definition of supplementary angles |
This proof shows the relationship between the angles in the context of parallel lines and a transversal, establishing that consecutive interior angles are supplementary.