Answer :
The length of the mid-segment of a trapezoid with the given bases is 19.
length of bases of trapezoid = 17 and 21
length of the trapezoid's mid-segment = 1/2(17+21)
=1/2(38)
=19
length of bases of trapezoid = 17 and 21
length of the trapezoid's mid-segment = 1/2(17+21)
=1/2(38)
=19