Which lines, if any, can you conclude are parallel given that mz1+ m 2 = 180? Justify your conclusion with a theorem or postulate.

A. ; j || k, by the Converse of the Same-Side Interior Angles Theorem
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B. ; || k, by the Converse of the Alternate Interior Angles Theorem
C. g | h, by the Converse of the Alternate Interior Angles Theorem
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D. g || h, by the Converse of the Same-Side Interior Angles Theorem