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Is quadrilateral Q a square? (1) The sides of Q have the

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Is quadrilateral Q a square? (1) The sides of Q have the [#permalink] New post 28 Nov 2007, 15:19
Is quadrilateral Q a square?
(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length
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 [#permalink] New post 28 Nov 2007, 15:40
С. only both can let us a square.
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 [#permalink] New post 28 Nov 2007, 16:05
yogachgolf wrote:
why 'a' is insuff?


you can imagine four sticks with same length that are pinned by hinges. you can easily transform the square to a different rhombuses and even to a line.
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Re: Square [#permalink] New post 28 Nov 2007, 16:24
yogachgolf wrote:
Is quadrilateral Q a square?
(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length


C

Here il post u a drawing.
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Re: Square [#permalink] New post 28 Nov 2007, 17:41
GMATBLACKBELT wrote:
yogachgolf wrote:
Is quadrilateral Q a square?
(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length


C

Here il post u a drawing.


Thanks guys. :oops:
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 [#permalink] New post 29 Nov 2007, 09:57
yogachgolf wrote:
walker wrote:
С. only both can let us a square.


why 'a' is insuff?


Because it can be a parellogram or rhombus..
  [#permalink] 29 Nov 2007, 09:57
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