3.1.3 Proving that Lines are Parallel - Practice

1. Identify a postulate or theorem that proves p || q . Given: ∠ 2 ≅ ∠ 8

2. Identify a postulate or theorem that proves r || s . Given: ∠ 2 ≅ ∠ 4

4. Identify a postulate or theorem that proves j || k . Given: ∠ 6 and ∠ 7 are supplementary.

3. Identify a postulate or theorem that proves c || d . Given: ∠ 3 ≅ ∠ 7

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