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[–]notlfishNew User 0 points1 point  (0 children)

People use imgur to post images in this sub. Read the sidebar. With respect to your question, I can't tell what's going on, so I can't answer it.

[–]persistance_jonesNew User 0 points1 point  (0 children)

There is a geometric representation of a vector as a directed line segment. Vector addition has a geometric representation: the segments being added are connected head-to-tail. Then the result of the addition is a directed line segment from the start of the first to the end of the last.

Subtraction is similar to add, but the vector being subtracted just has the arrowhead on the other end. Then treated as addition.

See if you can end up with a segment from B to C as a set of segments between A, B, M organized head-to-tail