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OpenStudy (anonymous):
ABCD is a trapezoid with midsegment EF. If AB=9 and CD=12, what is EF? A)6 B)10.5 C)21 D)4.5
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OpenStudy (anonymous):
@ShadowLegendX
OpenStudy (anonymous):
10.5 with the formula base+base=? (12+9=21) then divide by 2 is 10.5
OpenStudy (anonymous):
formula a+b/2
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