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Coordinate geometry

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rishisbook
 Post subject: Coordinate geometry
 Post Posted: Mon Sep 12, 2011 4:54 am 
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Students


Posts: 28
A certain square is to be drawn on a coordinate plane. One of the vertices must be on the origin, and the square is to have an area of 100. If all coordinates of the vertices must be integers, how many different ways can this square be drawn?
A. 4
B. 6
C. 8
D. 10
E. 12

Instructors, please explain better method of solving this question. The method shown in MGMAT CAT asks you to assume four coordinates, which i was unable to assume while solving.
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jnelson0612
 Post subject: Re: Coordinate geometry
 Post Posted: Mon Oct 17, 2011 12:29 am 
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ManhattanGMAT Staff


Posts: 1857
Please see this thread: a-certain-square-is-to-be-drawn-on-a-coordinate-plane-t1016.html

Since it is a square, you do need to assume that it will have four points. I hope this thread will help you!

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Jamie Nelson
ManhattanGMAT Instructor
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