Equation of Plane- Equidistant with 2 Points

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SUMMARY

The equation of a plane equidistant from two points A(1, 1, 0) and B(5, 3, -2) can be derived by using the normal vector formed by the vector AB. The normal vector is determined by constructing the vector from A to B, which is <4, 2, -2>. The midpoint of A and B, located at (3, 2, -1), serves as a point on the plane. The equation of the plane can be expressed in the form 4(x - 3) + 2(y - 2) - 2(z + 1) = 0, simplifying to 4x + 2y - 2z - 10 = 0.

PREREQUISITES
  • Understanding of vector operations, specifically vector subtraction and magnitude calculation.
  • Familiarity with the equation of a plane in the form ax + by + cz + d = 0.
  • Knowledge of midpoint formula in three-dimensional space.
  • Basic comprehension of normal vectors and their relationship to plane equations.
NEXT STEPS
  • Study vector operations in three dimensions, focusing on vector addition and subtraction.
  • Learn how to derive the equation of a plane from a normal vector and a point on the plane.
  • Explore the concept of midpoints in three-dimensional geometry.
  • Investigate applications of planes in 3D space, including intersections and distance calculations.
USEFUL FOR

Students studying geometry, particularly those focused on three-dimensional space, as well as educators teaching concepts related to planes and vectors in mathematics.

emma3001
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Homework Statement



Find the equation of a plane, every point of which is equidistant from the points A(1, 1, 0) and B(5, 3, -2)


The Attempt at a Solution



I am quite stuck... I wasn't sure if I could find vectors AP and BP and then find their magnitudes using square root x^2 + y^2 + z^2
 
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It will help if you know the relationship between the components of a normal vector to a plane and the coefficients in the equation for the plane:

the plane ax + by + cz + d = 0

has the normal vector <a, b, c>.

Construct a vector between point A and B (which order doesn't matter). If you make this the normal vector to your plane, you will have an essential requirement to meet the condition for equidistance. For all the points in the plane to be equally distant from A and B, you now make sure your perpendicular plane contains the midpoint between A and B.
 

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