Question

This is a khan academy

Answer 1

X + 12 + 100 + x =180
X= 34

X+12 = 46

Answer 2

Total angles on a straight Line is 180°

SO

x + 12 + 100 + x = 180

2x + 112=180

2x= 180 - 112

2x =68

x=34°

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