The plane containing all the lines tangent to a specified point on a surface.
(differential geometry) Given a point P on a surface M, the tangent plane of M at point P, denoted by TP(M), is the plane passing through P which contains the tangent lines of all the curves on M passing through P.
Tangent-plane Sentence Examples
This mass is equal to 47rabcp,u; therefore Q = A47rabcp s and b =pp, where p is the length of the perpendicular let fall from the centre of the ellipsoid on the tangent plane.
It may be defined as a section of a right circular cone by a plane parallel to a tangent plane to the cone, or as the locus of a point which moves .so that its distances from a fixed point and a fixed line are equal.