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Is quadrilateral ABCD a square? (See attached doc for the

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Is quadrilateral ABCD a square? (See attached doc for the [#permalink] New post 01 Jun 2008, 08:42
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Is quadrilateral ABCD a square? (See attached doc for the diagram)
(1) AB = BC = CD = DA
(2) x + y = 180
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is
sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient
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Re: DS- quadrilateral ABCD a square? [#permalink] New post 01 Jun 2008, 08:45
i get c.

in order for this to be a square, not only do they have to be equal and ||...and the sum of the two adjacent angles is 180..
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Re: DS- quadrilateral ABCD a square? [#permalink] New post 01 Jun 2008, 11:07
E, I think the rhombus would satisfy the 2 conditions
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Re: DS- quadrilateral ABCD a square? [#permalink] New post 01 Jun 2008, 11:48
gmatnub wrote:
E, I think the rhombus would satisfy the 2 conditions


The answer is E - because of the stated reason above - it can be a rhombus since the adjacent angles are supplementary
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Re: DS- quadrilateral ABCD a square? [#permalink] New post 01 Jun 2008, 19:06
from

stat1 : the quadrilateral can be a square or rhombus
insuff
stat2 : teh quad can be a ||lgram or a rhombus


from 1 and 2
the quad can be a square or a rhombus
insuff

E
Re: DS- quadrilateral ABCD a square?   [#permalink] 01 Jun 2008, 19:06
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