## how to find intersection?

### bsd (view profile)

on 23 Sep 2011

Hai,

I am working on analytical geometry, I need to find the intersection of a line and a plane. Is there any function in matlab, that could do the above the function? Looking forward to hearing from you soon.

BSD

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### Fangjun Jiang (view profile)

Answer by Fangjun Jiang

on 23 Sep 2011

Walter Roberson

### Walter Roberson (view profile)

on 23 Sep 2011

No. But you can use the coordinates of the square to define the plane, find the intersection, and then check to see whether the intersection falls within the square.

bsd

### bsd (view profile)

on 23 Sep 2011

how is it possible to use the coordinates of the square to define the plane?

BSD

Fangjun Jiang

### Fangjun Jiang (view profile)

on 23 Sep 2011

To define a plane, you need three points (not in a line), right? Use any three of the four coordinates.

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