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5 votes
M 2 = a°, m 3 = b°, m 4 =

a
b
a + b
a - b
(see picture)

M 2 = a°, m 3 = b°, m 4 = a b a + b a - b (see picture)-example-1

1 Answer

2 votes

The answer is a+b. Since a triangle is equal to 180 degrees, and you know that angle 2 = a degrees and angle 3 = b degrees then you know that 180 degrees minus angle 2 and angle 3 = angle 1.


It is also known that angle 1 and angle 4 added together will be 180 degrees. Since before we already found out that angle 1 = 180 - angle2 + angle3, we know that angle4 = angle2+angle3

User Ngplayground
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