An isosceles right triangle has legs that are the same length and acute angles each measur...

An isosceles right triangle has legs that are the same length and acute angles each measuring 45°.

a. Write an expression in terms of a that represents the length of the hypotenuse.

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b. Use your result from part (a) to write a sentence that describes the length of the hypotenuse of an isosceles right triangle in terms of the length of a leg.