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14 October, 04:12

Prove the following statement by contradiction using an indirect proof. In a triangle angle A = 90°, then the triangle is a right triangle. Which of the following choices would be the first step to temporarily assume?

A. angle A = 90

B. The triangle is a right angle

C. The triangle is not a right angle

D. Angle A is not 90

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Answers (1)
  1. 14 October, 04:32
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    I think the answer is B. The triangle is a right angle.
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