SOLUTION: if three sides of trapezoid are 18.318mm, 17.02296 and 17.02296 the what is the length of fourth side??

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Question 982064: if three sides of trapezoid are 18.318mm, 17.02296 and 17.02296 the what is the length of fourth side??
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
That's not enough information to determine a trapezoid.  You must be
given which two sides are parallel, and something else, perhaps the
perpendicular height.