Answer:
(5.5,8) and (5.5,3) are the possible midpoints
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Step-by-step explanation:
Given


Required
Determine the midpoint of DE
First, we need to determine the coordinates of E
If E is at the right of DE, then




Hence,
(D,E) = (11,6)
<em>Calculate Midpoint</em>


Else:




Hence,
(D,E) = (11,16)
<em>Calculate Midpoint</em>


<em>(5.5,8) and (5.5,3) are the possible midpoints</em>