Question: D C E 12 3 B Given: AABC Prove: m21 + mz2 + m23 = 180 Fill in the missing reasons below. Statements Reasons (1)

D C E 12 3 B Given: AABC Prove: m21 + mz2 + m23 = 180 Fill in the missing reasons below. Statements Reasons (1) AABC (1) Given (2) Through point C, draw DCE parallel (2 to AB. (3) mz1 = mZACD, m23 = mZBCE (3) (4) mZACD + m/2 + maBCE = 180 (4) (5) m21 + m42 + m43 = 180

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