Question

Please help! #15 i know how to solve it i just dont know how to erite the equation out

Answer 1

Here's 2 (almost) equations:
m<1 = m<3
m<1 + m<2 + m<2 + m<3 = 360

I got the first one because angle 1 and 3 are on opposite sides, so they must be equal. I got the second one because 2 and (unlisted) 4 must be equal, and all of the angles added must be 360.

Answer 2

M1=80°
M2=100°
M3=80°
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