In the rectangle ABCD, E,F,G and H are the midpoints of each side, BC=x, CD=y. How to express the shaded area with x and y?
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数学PS
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In the rectangle ABCD, E,F,G and H are the midpoints of each side, BC=x, CD=y. How to express the shaded area with x and y?
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正确答案: D