3 punkter i rummet fastlægger en plan

$$P_{1}$$

$$P_{2}$$

$$P_{3}$$




Resultat

Udregning

$$\overrightarrow{r}=\overrightarrow{P_{1} P_{2} }=\left(\begin{matrix}x_{2}-x_{1}\\y_{2}-y_{1}\\z_{2}-z_{1}\end{matrix}\right)$$

$$\overrightarrow{r}=\overrightarrow{P_{1} P_{3} }=\left(\begin{matrix}x_{3}-x_{1}\\y_{3}-y_{1}\\z_{3}-z_{1}\end{matrix}\right)$$