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Mathematics 12 Online
OpenStudy (anonymous):

Complete the two-column proof. Given: <2 ≅ <4, M<2=110° Proof: m<3 = 70° m∠2 = m∠4 Definition of congruent angles m∠4 = 110º b. ________ ∠3 and ∠4 are a linear pair Definition of a linear pair (shown in diagram) ∠3 and ∠4 are supplementary Linear Pair postulate m∠3 + m∠4 = 180º c. _______ m∠3 = 70º d. ________

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