# Plane

## Pointâ€“normal form of the equation of a plane

$$ax+by+cz+d=0$$

### The normal vector of the plane

$$\overrightarrow{n}=\left(a,b,c\right)$$

## Axial section form of the plane

$$\frac{x}{{x}_{0}}+\frac{y}{{y}_{0}}+\frac{z}{{z}_{0}}=1$$

## Distance of point $M({x}_{M},{y}_{M},{z}_{M},)$ from the plane

$$D=\frac{a\xb7{x}_{M}+b\xb7{y}_{M}+c\xb7{z}_{M}}{\sqrt{{a}^{2}+{b}^{2}+{c}^{2}}}$$

Keywords: Plane