Question

Which statement about a right triangle is true?

Answer 1

The correct answer is:  [B]:
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   "The square of the hypotenuse is equal to the sum of the squares of the legs."
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Note:  Hence the formula / equation for the Pythagorean theorem for a right triangle:

        a² + b² = c²  ;  

in which "c" is the length of the hypotenuse of a right triangle; 
& in which "a" and  "b" are the lengths of the other two sides of the right triangle.
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Answer 2

B. the square of the hypotenuse is equal to the sum of the squares of the legs.

that is your right answer because to find out if a triangle is a right triangle, you use the pythagorean theorem to find it.

a² + b² = c² 

hope this helps, God bless!