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triangle problem

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pck2103
 Post subject: triangle problem
 Post Posted: Mon Sep 01, 2008 9:49 pm 
does anyone know how to solve this?
Image
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Raj
 Post subject: Re: triangle problem
 Post Posted: Tue Sep 02, 2008 2:39 pm 
It is difficult to explain without labeling the triangle but will try..

Let y be the equal angles of the bottom triangle and z be the equal angles of the triangle on the top.

Since x, y, z form a straight line x+y+z = 180

Also, in the quadrilateral, 90+x+(180-y)+(180-z) = 360 (total of angles in a quadrilateral).

this gives z+y = x+90, substitute in first equation:
x+90 +x = 180 => 2x = 90 => x = 45.

Is that right?
-Raj.


pck2103 wrote:
does anyone know how to solve this?
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RonPurewal
 Post subject:
 Post Posted: Mon Sep 15, 2008 6:52 am 
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ManhattanGMAT Staff


Posts: 7146
um.

http://www.manhattangmat.com/forums/post8544.html

http://www.manhattangmat.com/forums/in- ... -t830.html

please post the whole problem.
thank you.
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