I have 3 non-colinear points in space, how do I find the slope (ratio of rise per distance travelled) of the plane they form, in the x and y axis? Slope is same as knowing the vertical angles from axis to plane, but I don;t want any sin/cosines involved as I believe its not needed.

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anonymous · Answer

found the answer at: http://paulbourke.net/geometry/planeeq/ What you do is figure A B C D and then plug in 0 for x y and z to isolate for the xz and yz planes