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SVETLANKA909090 [29]
3 years ago
8

Will give brainliest plz answer quick

Mathematics
2 answers:
aev [14]3 years ago
4 0

Answer:

65

Step-by-step explanation:

Exterior angle = Sum of 2 interior angles

x + 31 = x + x - 34

x + 31 = 2x - 34

x - 2x = - 34 - 31

- x = - 65

x = 65

myrzilka [38]3 years ago
4 0

Step-by-step explanation:

A triangle's angles add up to 180°, and a straight line is 180 degrees, so 180 - x + 31 is the interior angle that isn't labeled.

x+x-34+180-x-31=180

x=180-115

x=65

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