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This page is about Intersection in the context of Geometry. For other uses, see Intersection.
The intersection of two lines $AB$ and $CD$ is denoted by $AB \cap CD$.
The intersection of two geometric figures is the set of points shared by both figures.
Note that this use of $\cap$ is consistent with that of its more usual context of set intersection.
When two lines intersect, they are said to cut each other.
- 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): meet: 2.
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): intersect