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27 November, 15:49

In triangle FGH, mF is 94°, mG is 49°, and mH is 37°. The exterior angles of triangle FGH are J, K, and L, and they are adjacent to F, G, and H, respectively.

What is mK?

A. 86°

B. 49°

C. 143°

D. 131°

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Answers (1)
  1. 27 November, 16:06
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    The answer is D, 131°.

    The exterior angles theorem tells us that the measure of an exterior angle of a triangle is equal to the sum of the other two angles of the triangle. Since m∠G=94°, m∠K=180-94=131°.
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