Answer:
See attached
Explanation:
Given trapezoids with midlines, you want to find various values in the figures shown.
Midline
The length of a midline of a figure is the average of the parallel edges. That means ...
- twice the midline is the sum of the outer edges
- either outer edge is the difference of twice the midline and the other edge
These relations are used in solving the figures shown. Work and results are given in the attachment.