draw a trapezoid whose parallel sides measure 1 inch and 1 1/2 inches.
find the length of the midsegment
the midsegment would be the average of the two parallel sides,
that is,
(1 + 1.5)/2 or 1.25 inches
find the length of the midsegment
that is,
(1 + 1.5)/2 or 1.25 inches