Question

Find the coordinate of point B, given that C is the midpoint of AD and B is

the midpoint of AC.
D(6, 11)
B O
A(-4,-5)

Answer 1

B ( -3/2; 13/2 )

Explanation:

Midpoint AD : X1 + X2 /2 ; Y1 + Y2 /2

-4 + 6 /2 ; 5 + 11 /2

1 ; 8

C (1 ; 8)

Midpoint B : X1 + X2 /2 ; Y1 + Y2 /2

-4 + 1 /2 ; 5 + 8 /2

-3/2 ; 13/2

B (-3/2 ; 13/2)