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PLEASE HELP (Screenshot)

PLEASE HELP (Screenshot)-example-1

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Answer:

C. 75°

Explanation:

The sum of the three angles is 180°, as it is for the angles in any triangle.

35° + 70° + x° = 180° . . . . an equation expressing the relationship of the angles

x° = 180° -35° -70° . . . . . subtract 35° and 70°

x° = 75°

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