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OpenStudy (lukecrayonz):
Geometry :) @Yttrium http://gyazo.com/1096d760b97e3a2ab618443e7a21564d
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OpenStudy (yttrium):
First of all, of course you need to find the ratio of proportionality. Can you find it?
OpenStudy (lukecrayonz):
Well the top 12 and 15 is 4:5?
OpenStudy (lukecrayonz):
Well hmm. 15 and 40 is .375
OpenStudy (lukecrayonz):
ignore the 12 and 15..
OpenStudy (yttrium):
Actually, the theorem states likes this |dw:1380122509480:dw| so, if there is a line parallel to one side of the triangle, it proportionally divides the other two sides. Hope you get it
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OpenStudy (lukecrayonz):
So BD=20?
OpenStudy (yttrium):
Yes :D
OpenStudy (lukecrayonz):
Another question :)
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