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May 6, 2015

Homework Help: math

Posted by eve on Sunday, January 22, 2012 at 10:12am.

I need to find out the type of triangle (by the type of angles). Is triangle acute, right or obtuse, when the lenghts of triangle sides are:
a) 7, 8, 12
b) 20, 15, 40
c) 2/3, 8/9, 10/9

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