Parametric Equations of a Plane

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SUMMARY

The discussion focuses on deriving parametric equations for a plane defined by three distinct points A, B, and C. The process begins with calculating the normal vector using the cross product of vectors AB and AC, ensuring they are not collinear. The vector equation of the plane can then be established using one of the points and the direction vectors. Finally, the conversion from the vector equation to parametric equations is straightforward once the direction vectors are identified.

PREREQUISITES
  • Understanding of vector operations, specifically cross products
  • Knowledge of parametric equations in three-dimensional space
  • Familiarity with the concept of collinearity in vectors
  • Basic skills in coordinate geometry
NEXT STEPS
  • Learn about vector cross product calculations in 3D geometry
  • Study the conversion of vector equations to parametric equations
  • Explore the concept of collinearity and its implications in vector mathematics
  • Investigate applications of parametric equations in computer graphics and physics
USEFUL FOR

Students and professionals in mathematics, physics, and engineering who need to understand the geometric representation of planes and their equations in three-dimensional space.

lostinphys
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Here is my question: When given three distict points A, B, C, find the parametric equations for the plane through these three points.
I was able to get the plane through these three points, first of all by getting the normal vector n = ABxAC, then by multiplying this vector by [(X-Xo)+(Y-Yo)+(Z-Zo)]. Where Xo, Yo, and Zo are the coordinates of point A.
But from this point on I don't know how to obtain the parametric equations from the plane equation. Please help!
 
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lostinphys said:
Here is my question: When given three distict points A, B, C, find the parametric equations for the plane through these three points.
I was able to get the plane through these three points, first of all by getting the normal vector n = ABxAC, then by multiplying this vector by [(X-Xo)+(Y-Yo)+(Z-Zo)]. Where Xo, Yo, and Zo are the coordinates of point A.
But from this point on I don't know how to obtain the parametric equations from the plane equation. Please help!


You can first find the vector equation then convert it to parametric equations.

You have the three points A, B, and C. Find vector AB and vector AC then double check to make sure that they are not collinear (as you need two non-collinear direction vectors for equation of a plane). You now have two direction vectors and pick any point A, B, or C and you should have the vector equation. From there you can find the parametric equations.
 

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