[1,2,3]

[1,3,6]

[3,8,6]

[3,7,3]

I know I have to find 2 (I think) vectors that determine the area and then I take the cross product of the 2. That's about all I know I don't know which 2 determine the area.

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- January 11th 2009, 10:00 PMsfgiants13Area of a Parallelogram with Vertices..
[1,2,3]

[1,3,6]

[3,8,6]

[3,7,3]

I know I have to find 2 (I think) vectors that determine the area and then I take the cross product of the 2. That's about all I know I don't know which 2 determine the area. - January 11th 2009, 10:14 PMearboth
The given vectors are the stationary vectors of the vertices of the parallelogram. Calculate the vectors describing the sides of the parallelogram:

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

You now know the pairs of parallels. As you have written, the area is