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Mathematics 7 Online
OpenStudy (anonymous):

Help please

OpenStudy (destinymasha):

probably not , but I cant prove either, sorry

OpenStudy (whpalmer4):

sidesplitter theorem says that you should have the same ratio between AE and ED as you do between BC and CD if (and only if) CE and BA are parallel

OpenStudy (whpalmer4):

That's correct.

OpenStudy (whpalmer4):

http://www.mathwarehouse.com/geometry/similar/triangles/side-splitter-theorem.php well, evaluate the two fractions, or cross-multiply them, determine if they are equal or not.

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