In a triangle,
the sum of the squares of the lengths of the legs is equal to the square of the length of
the

Step-by-step explanation: In a right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse or a² + b² = c². This is called the Pythagorean Theorem.

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step-by-step explanation:

the answer is 8/21

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