May 23rd, 2012, 10:53 AM  #1 
Newbie Joined: Jan 2012 Posts: 22 Thanks: 0  Geometry, triangle question.
Here is the link to the problem it's problem number 3 >>> http://www.nysedregents.org/Geometry/81 ... xam811.pdf I don't know how to solve it. 
May 23rd, 2012, 10:58 AM  #2 
Math Team Joined: Sep 2007 Posts: 2,409 Thanks: 6  Re: Geometry, triangle question.
Since the two lines are parallel, the two triangles have the same angles and so are similar triangles.

May 23rd, 2012, 11:42 AM  #3  
Newbie Joined: Jan 2012 Posts: 22 Thanks: 0  Re: Geometry, triangle question. Quote:
I get this: 5 / 12 = 10 / x x = 24  
May 23rd, 2012, 12:02 PM  #4 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,852 Thanks: 1077 Math Focus: Elementary mathematics and beyond  Re: Geometry, triangle question. 
May 23rd, 2012, 12:03 PM  #5 
Newbie Joined: Jan 2012 Posts: 22 Thanks: 0  Re: Geometry, triangle question.
Okay I got it thank you.

May 23rd, 2012, 12:08 PM  #6  
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,103 Thanks: 907  Re: Geometry, triangle question. Quote:
5 / 12 = 10 / (10 + x)  

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