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## Homework Statement

Find the area of the paralellogram with vertices P

_{1}, P

_{2}, P

_{3}, and P

_{4}. *Not all pairs of vertices will give rise to a side.

P

_{1}= (1, 2, -1)

P

_{2}= (4, 2, -3)

P

_{3}= (6, -5, 2)

P

_{4}= (9, -5, 0)

## Homework Equations

||U X V || is the area of the parallelogram having U≠0 and V≠0 as adjacent sides.

## The Attempt at a Solution

**How do you know which set of points will create a vector that are adjacent to each other?**