Answer:
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Explanation:
Depending on the shape of the bloodstain, you can tell the direction that a person may have gone.
For example, if I am walking/running somewhere while my hand is dripping blood, the blood drops will make a "line" so to speak, and the initial impact will be the thickest spot. As the blood hits the ground with force and inertia, it will narrow out. The faster you move, the longer the spatter. If you just sit still, bloodstain patterns will remain in a circular shape.