Plane Math Example 2
Follow the full solution, then compare it with the other examples linked below.
Example 2
mediumThree points A, B, C lie on a plane. Write the equation of that plane.
Solution
- 1 Step 1: Find two vectors in the plane: and .
- 2 Step 2: The normal to the plane is .
- 3 Step 3: Plane equation using point A: , giving .
- 4 Step 4: Verify: all three points satisfy .
Answer
(the xy-plane)
Three non-collinear points determine a unique plane. The cross product of two vectors lying in the plane gives the normal vector, which is then used in the plane equation .
About Plane
A perfectly flat surface extending infinitely in all directions with zero thickness; defined by three non-collinear points.
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