Answer:
n = 27
m = 36
Step-by-step explanation:
The isosceles triangle with n° as its base angle will have a sum of angles that is 180°.
2n° +126° = 180°
n +63 = 90 . . . . . . divide by 2°
n = 27 . . . . . . . . . subtract 63
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The external angle 126° is the sum of the remote interior angles m° and 90°.
m° +90° = 126°
m = 36 . . . . . . . . . . divide by °, subtract 90
