Lines l, m, and n lie in a plane and are cut by a transversal, t. ∠1 is supplementary to ∠2, and ∠2 is supplementary to ∠3. | Which lines, if any, are parallel? | What justifies your answer?

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m and n

Lines Cut by a Transversal

Lines l, m, and n lie in a plane and are cut by a transversal, t. ∠1 is supplementary to ∠2, and ∠2 is supplementary to ∠3. | Which lines, if any, are parallel? | What justifies your answer?

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