What is the measure of angle 7?

Mathematics

1 answer:

Ratling [72]3 years ago

8 0

m<1 = m<4 by vertical angles theorem

3x + 10 = 4x - 15

-1x = -25

x = 25

m<1 + m<7 = 180 if parallel alternate interior angles supplementary

3x + 10 + m<7 = 180

3(25) + 10 + m<7 = 180

75 + m<7 = 180

m<7 = 105°

Hope this helps! ;)

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