2 Answers

Isy · Answer 1 · 2019-05-30T22:53:55+0000

133 = 38 + m angle adjacent to n (exterior angle of triangle theorem)
so m this angle = 133 - 38 = 95 degrees
Thus m n = 180 - 95 = 68 degress

Its option A.

Stephen DuMont · Answer 2 · 2019-06-04T06:31:01+0000

An exterior angle of a triangle is equal to the sum of the opposite interior angles

so
n = (180 - 133) + (180 - 142)
n = 47 + 38
n = 85

answer is A. 85

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