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posted by Karen on Monday, April 15, 2013 at 9:45am.
A triangle has side lengths 10,15,and 7.Is the triangle acute,obtuse,or right?Explain.
if ABC is a right triangle (B = 90°), 7^2 + 10^2 = 15^2 but 149 < 225, so B < 90° and ABC is acute
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