Abc Is Triangle Whose Vertices Are 2 1 B 4 2 And C 2 5 Find Length Of Median Ad

ABC is a triangle whose vertices are A(2, -1 ), B(-4, 2) and C(2, 5). Find the length of the median AD.

Answers:

Let D be the mid point BC.
The mid point of the line segment joining (x1,y1) and (x2,y2) is (x1+x2/2, y1+y2/2)
Thus the coordinates of D = (-4+2/2, 2+5/2) ∴ D=(1-,7/2)
As A =(2,-1) and D = (-1,,7/2)
AD =