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November 18th, 2008, 07:33 PM
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| | Help prove the following is true. Prove that BC = 2XY
Thanks in advance =] | 
November 18th, 2008, 07:35 PM
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| | I think you need to prove that they are similiar triangles not sure though | 
November 18th, 2008, 07:36 PM
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| | Sorry, picture is uploaded now | 
November 18th, 2008, 07:45 PM
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| | geometry proof originally posted by ferken
yes the proof is easy.you have two similar triangles and they are in the ratio of 1 to 2
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November 18th, 2008, 07:56 PM
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| | hmmm
more help is appreciated =] | 
November 18th, 2008, 08:50 PM
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| | they're similar by SAS | 
November 19th, 2008, 07:40 PM
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| | grometry proof originally posted by ferken
Additional help requested
the line connecting the midpoints of two sides of a triangle is parallel to the third side. from this you can show that triangle AXY is similar to ABC by angle-angle- angle
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