Answer:
(2, 5)
Explanation:
The longest side of the triangle will be the side with the coordinate (1,4) and (3,6) due the value of the distance between them;
Midpoint = (x1+x2/2, y1+y2/2)
X = 1+3/2
X = 4/2
X = 2
Y = 4+6/2
Y = 10/2
Y = 5
Hence the required midpoint (X, Y) will be at (2, 5)