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        1. 7. Let be the length of a diagonal of a square, and be the length of two diagonals of a rhombus respectively. If ,then the ratio of area of the square and rhombus is 查看更多

           

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          Let a be the length of a diagonal of a square, b and c be the length of two diagonals of a rhombus respectively. If b:a=a:c,then the ratio of area of the square and rhombus is (  )

          (A)1:1.   (B)2:.  (C)1:. (D)1:2.

          (英漢詞典:length長(zhǎng)度;diagonal對(duì)角線;square正方形;rhombus菱形;respectively分別地;ratio比;area面積)

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          Let a be the length of a diagonal of a square,b and c be the length of two diagonals of a rhombus respectively.If b:a=a:c,then the ratio of area of the square and rhombus is(  )
          (英漢詞典:length長(zhǎng)度;diagonal對(duì)角線;square正方形;rhombus菱形;respectively分別地;ratio比;area面積)
          A、1:1
          B、2:
          3
          C、1:
          2
          D、1:2

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          Let a be the length of a diagonal of a square,b and c be the length of two diagonals of a rhombus respectively.If b:a=a:c,then the ratio of area of the square and rhombus is( 。
          (英漢詞典:length長(zhǎng)度;diagonal對(duì)角線;square正方形;rhombus菱形;respectively分別地;ratio比;area面積)
          A.1:1B.2:
          3
          C.1:
          2
          D.1:2

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