Definition:Common Tangent
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Definition
Let $C_1$ and $C_2$ be plane curves.
Let $\LL$ be a straight line which is tangent to both $C_1$ and $C_2$.
Then $\LL$ is a common tangent to $C_1$ and $C_2$.
Also see
- Results about common tangents can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): common tangent
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): common tangent