Locus of a Point Equidistant from Two Planes
For two planes:
$$P_1=0$$
and:
$$P_2=0$$
the locus is given by:
$$\frac{P_1}{\sqrt{A_1^2+B_1^2+C_1^2}}=\pm\frac{P_2}{\sqrt{A_2^2+B_2^2+C_2^2}}$$
Usage
- Used in locus problems involving equal distances from two planes.