What is the equation of a plane in 3D?
We can define it as the space that has three points (that don’t lie on the same line) or by a point and a normal vector to the plane. We also know it as the vector equation of a plane. In addition, the general equation of a plane in 3D space is A ∙ 0 + B ∙ 0 + C ∙ 0 + D = 0 => D = 0.