A builder set up a wooden frame in which to pour concrete for a foundation to a house. The length of the wooden frame is 24 feet. The width is 32 feet. The diagonal is 40 feet. Which best describes the foundation?

For a rectangle, the length, width, and diagonal form a right triangle, so the Pythagorean theorem applies: 24² + 32² = 576 + 1,024 = 1,600 = 40². Therefore, the foundation may be a rectangle, as choice A states.

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