Definition 31.4High School Mathematics · Chapter 31 — Vectors, Lines and Planes in Space
The plane through A directed by two non-collinearvectorsu,v is the set of points M with AM=su+tv, (s,t)∈R2.
Left: the line through A with direction u, graduated by the parameter t. Right: the plane through A directed by u and v; every point M of the plane is reached as AM=su+tv.