ACT 2017 June(74C) Math Question 13 Explanation - ACT Helper

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2017 June(74C) Math Question 13
Similar Triangles & Types of Triangles
- Similar Triangles
Choice D
$\frac{A C}{A B} = \frac{A E}{A D}$ $\Rightarrow \frac{A C}{6 + 5 + 4} = \frac{12}{6}$ $\Rightarrow A C = 30$
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