i need to know this ASAP i dont know how to do this can someone type in the answer step by step please

Mathematics

1 answer:

alexira [117]3 years ago

3 0

M1+m2+m3=180
m5+m6+m7=180
Triangle angle sum theorem
m1+m2+m3=m5+m6+m7
Since m3 is congruent to m5
You can subtract m3 from the left and m5 from the right
m1+m2=m6+m7

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