ACT 2013 December(71E) Math Question 10 Explanation - ACT Helper

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2013 December(71E) Math Question 10
Angles
- Vertex Angles & Bisectors
Choice J
$∠ B C A = ∠ E C F = 31 °$ $∠ B A C = ∠ B C A = 31 °$ $∠ A B C = 180 ° - 31 ° - 31 ° = 118 °$
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