Bullet Trajectories: Misidentifying Bullet Trajectories in Reconstruction

Pythagora’s Theorem is the basis for establishing the area of origin in blood pattern analysis and is commonly used in
shooting reconstruction for establishing bullet trajectories. In part, this method of triangulation works well in blood
pattern analysis, because a specific blood pattern is created by a hemorrhaging event from a single source that casts spatter
in directions away from the source point. By dissecting the central axis of the stains to find an area of convergence,
and taking the arc sine of the ratio of representative stains, one may derive the degrees of the angle of incidence or impact.

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Source: Forensic In the News