Question

On parallelogram ABCD, if A(3,-4) B(10,-2) C(8,-9) and D(1,-11), what are the coordinates of E?

Answer 1

E(5.5,-6.5)

Explanation:

We simply draw the parallelogram in coordinate system and read the coordinates of E.

Answer 2

(5.5 , - 6.5)

Explanation:

Diagonals of a parallelogram bisect each other.

E (x , y) : midpoint of segment AC or segment BD

x = (3 + 8) / 2 = 11/2 = 5.5

y = (-4 + -9) /2 = -13/2 = - 6.5