1, about the distance from the point to the plane, that is, a straight line perpendicular to the plane passes through the point, and the vertical section length from the point to the vertical foot is the distance from the point to the plane. When calculating, if the vertical line segment representing the distance cannot be found directly, the volume conversion method can be used, that is, the height of a triangular pyramid is taken as the distance from the vertex to the bottom.

If vector A is the normal vector of a plane, and point P is on the plane in rectangular coordinate system (it can be any point on the plane), then the distance from point A out of the plane to this plane is d= (vector AP* vector a)/| vector a|. (here | vector a| represents the modulus of vector a, that is, the length).

2. The distance from the straight line to the plane, that is, the straight line is parallel to the plane. You can find a point on a straight line (usually a special point) and then find the distance from that point to the plane.