Is quadrilateral RSTV a rectangle? (1) The measure of Angle : DS Archive
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# Is quadrilateral RSTV a rectangle? (1) The measure of Angle

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Director
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09 Oct 2005, 00:50
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(1) The measure of Angle RST is 90 degree
(2) The measure of Angle TVR is 90 degree
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Cheers, Rahul.

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09 Oct 2005, 02:52
I believe it's E...

In the file I drew a figure that shows why the quadrilater it's not necessarly a rectangle.

Ciao
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09 Oct 2005, 10:33
I think C

If two opposite angles are 90 deg each, i think it has to be a rectangle.
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09 Oct 2005, 11:12

other 2 angles might not be 90 degree....
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09 Oct 2005, 16:34
I agree with GSR's logic, (c) b/c two opposite angles of a quadrilateral must make a rectangle.

If they had said <STV was also 90 then I would choose D.

B.
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09 Oct 2005, 16:46
nakib77 wrote:

other 2 angles might not be 90 degree....

Im not quite sure how you could possibly say that! Can you explain?
OA is E! I chose C!
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09 Oct 2005, 17:21
Wow, I chose C too! Please explain!
Manager
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09 Oct 2005, 20:33
I get (E)

statements I & II are not sufficient alone, which is obvious. together, we only know that the opposite angles are both 90. Consider the attachment (picture), thus (E)
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09 Oct 2005, 21:20
Chets: Could pls attach the picture? Thanks.
09 Oct 2005, 21:20
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# Is quadrilateral RSTV a rectangle? (1) The measure of Angle

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