ACT 2009 April(66F) Math Question 15 Explanation - ACT Helper

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2009 April(66F) Math Question 15
Perimeter, Area, Volume
- Triangles, Squares, Rectangles, Circles
Choice E
$∠ B = 90 °$ $∠ A + ∠ B + ∠ C = 180 °$ $\Rightarrow ∠ A + ∠ C = 90 °$ $∵ ∠ A > 43 °$ $90 - 43 = 47$ $∴ ∠ C < 47 °$
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