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cc Select the postulate or theorem that can be used to prove that lines P and Q are parallel. cc

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cc State the postulate or theorem you would use, to prove that ∠2 and ∠3 are congruent. cc

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cc State the postulate or theorem you would use, to prove that lines l and m are parallel. cc

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cc State the postulate or theorem you would use, to prove that lines m and n are parallel. cc

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cc ∠1 and ∠2 are supplementary. State the theorem or postulate to prove l  m. cc

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cc In the triangle ABC, DE¯  BC¯, ∠BAC = 40° and ∠ACB = 80°. Which theorem / postulate will help you to prove ∠ADE = 60°? cc

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