<PRE><B>Question 1193344</B>
&lt;br&gt;
No figure shown; without it we can answer some of the questions but not all.&lt;br&gt;
Find MF.&lt;br&gt;
We can&#39;t; point M is not defined&lt;br&gt;
Find EM.&lt;br&gt;
We can&#39;t; point M is not defined&lt;br&gt;
Find EF.&lt;br&gt;
The median of a trapezoid has a length that is half the sum of the lengths of the two bases: (11.4+17.2)/2= 14.3&lt;br&gt;
Find 1/2(AB + DC).&lt;br&gt;
14.3 -- we did that above&lt;br&gt;
If you can use ONLY the theorems shown to find the length of EF, then draw diagonal AC to divide the trapezoid into triangles ABC and ACD, with the diagonal intersecting EF at some point P.&lt;br&gt;
Then, using the stated theorem about the length joining the midpoints of a side of a triangle, EP is half of CD and PF is half of AB, so EF=EP+PF is half of (AB+CD).&lt;br&gt;
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