Find the midpoint of the segment with the given endpoints.
D(5, 1) and E(13, 11)
(9, 6)
(21, 21)
(324, 144)
(4, 5)
D(5, 1) and E(13, 11)
(9, 6)
(21, 21)
(324, 144)
(4, 5)