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Diagonals of a Parallelogram: Coordinates of Intersection

ACTMAT-OKKLRF

For parallelogram ABCD below, at which coordinates do the diagonals intersect?

A

$ (a,c) $

B

$ (\cfrac{a}{2}, \cfrac{c}{2}) $

C

$ (\cfrac{a+b}{2}, \cfrac{c}{2}) $

D

$ (\cfrac{a+b}{2}, \cfrac{b+c}{2}) $

E

$ (\cfrac{b+c}{2}, \cfrac{a+b}{2}) $