How to find coordinates of $D$

Question

How can I find the coordinates $D$ if I have the other coordinates of a parallelogram $A(-3/-2)$, $B(4/1)$, $C(6/5)$, $D(?/?)$.

Thanks in advance

Answer 1

Hint:

by the parallelogram low you have: $$ \overrightarrow {AC}=\overrightarrow {AB}+\overrightarrow {AD} $$ so $$ \overrightarrow {AD}=\overrightarrow {AC}-\overrightarrow {AB} $$

can you do from this?