3.3. Proving Lines Parallel http://www.ck12.org
TABLE3.8:
Statement Reason1.^61 ∼=^62 1.
2.l||n 2.
3.^63 ∼=^64 3.
4. 4. Converse of Alternate Interior Angles Theorem
5.l||m 5.
For Questions 6-9, create your own two column proof.
6.Given:m⊥l,n⊥lProve:m||n7.Given:^61 ∼=^63 Prove:^6 1 and^6 4 are supplementary8.Given:^62 ∼=^64 Prove:^61 ∼=^63