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OpenStudy (anonymous):
In trapezoid ABCD, if the base DC = 16 and the base AB = 20 and E is the midpoint of AD and F is the midpoint of BC, what is the measure of EF?
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OpenStudy (anonymous):
cannot be determined.
OpenStudy (anonymous):
you must have left out some part of the question
OpenStudy (anonymous):
or maybe it is 18
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