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Mathematics, 27.10.2020 01:10 nickname0097

Which statement must be true to prove m∠1+m∠2+∠3 = 180? A. m║n
B. m∠1+m∠2 = 180°-m∠3
C. m∠1+m∠2 = 90°
D. m∠1+m∠2 = m∠3

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Which statement must be true to prove m∠1+m∠2+∠3 = 180? A. m║n
B. m∠1+m∠2 = 180°-m∠3
C....
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