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Based on the illustration, if m∠7 = 51 degrees, what is m∠1?

A. m∠1 = 51 degrees

B. m∠1 = 61 degrees

C. m∠1 = 145 degrees

D. m∠1 = 129 degrees

Based on the illustration, if m∠7 = 51 degrees, what is m∠1? A. m∠1 = 51 degrees B-example-1
User Caniko
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Answer: D. m∠1 = 129 degrees
User Oliver Nadj
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