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Ef is a median of isosceles trapezoid abcd the length of ab is 12 and the length of cd is 18 what is the length of de

Respuesta :

frika
The median line is always parallel to the bases. The length of the median is the average length of the bases, or using the formula:
[tex] \dfrac{base_1+base_2}{2} [/tex].
Hence, 
[tex]EF= \dfrac{12+18}{2}=15 [/tex]
Answer: EF=15 units.