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Published byFrank Terry Modified over 7 years ago

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EXAMPLE 1 Find the length of a hypotenuse SOLUTION Find the length of the hypotenuse of the right triangle. (hypotenuse) 2 = (leg) 2 + (leg) 2 Pythagorean Theorem x 2 = 6 2 + 8 2 x 2 = 36 + 64 x 2 = 100 x = 10 Find the positive square root. Substitute. Multiply. Add.

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GUIDED PRACTICE for Example 1 Identify the unknown side as a leg or hypotenuse. Then, find the unknown side length of the right triangle. Write your answer in simplest radical form. 1. SOLUTION (hypotenuse) 2 = (leg) 2 + (leg) 2 Pythagorean Theorem 5 2 = 6 2 + 4 2 25= 9 + x 2 x 2 = 16 x = 4 Find the positive square root. Substitute. Multiply. Subtract 9 from both sides Leg;4

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GUIDED PRACTICE for Example 1 Identify the unknown side as a leg or hypotenuse. Then, find the unknown side length of the right triangle. Write your answer in simplest radical form. 2. SOLUTION (hypotenuse) 2 = (leg) 2 + (leg) 2 Pythagorean Theorem x 2 = 6 2 + 4 2 x 2 = 36 + 16 x 2 = 52 Find the positive square root. Substitute. Multiply. Add. x = 2 13 hypotenuse; 213

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