normálvektorok
Normálvektorok, often translated as normal vectors, are fundamental concepts in vector algebra and geometry. A normal vector to a surface or a plane is a vector that is perpendicular to that surface or plane at a given point. This perpendicularity means that the dot product of the normal vector with any tangent vector lying in the surface or plane is zero.
In two-dimensional geometry, a normal vector to a line is a vector perpendicular to the direction vector
In three-dimensional space, the concept extends to planes. A plane in 3D is defined by a point
The direction of a normal vector can be outward or inward relative to a closed surface. For