Definition:Tangent Plane
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Definition
Let $S$ be the surface of a solid geometric figure.
Let $Q$ be a point on $S$.
A tangent plane to $S$ at $Q$ is a plane $P$ which intersects $S$ such that:
- all straight lines $\LL$ embedded in $P$ that intersect $S$ are tangent to $S$.
Also see
- Results about tangent planes can be found here.
Sources
- 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): tangent plane
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): tangent plane
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): tangent plane
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): tangent plane