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Geometry help

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A parallelogram has a 7-inch side and a 9-inch side, and the longer diagonal is 14 inches long. Find the length of the other diagonal. Do you need your calculator to do it?

then, (Continuation) Evaluate 72 + 92 + 72 + 92 − 142 − d2, where d is the length of the shorter diagonal.

  • Geometry help -

    From your description, you are not dealing with a parallelogram but rather a trapezoid. In a parallelogram, the top is parallel to the bottom, and the two sides are also parallel.

    By "d2" do you mean "d squared"? (Online, d^2 = d squared.) Is there supposed to be an equal sign anywhere in your "Continuation"?

    Repost your questions in clearer terms.

  • Geometry help -

    What is the perimeter of a triangle whose sides measure 15cm, 17cm, and 10cm?

  • Geometry help -

    Find the side of a square whose diagonal is 16√2 cm.

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