This article is about mathematical usages. For other uses, see Apex.
In geometry, an apex is a descriptive label for a visual singular highest or most distant point or vertex in an isosceles triangle, pyramid or cone, usually contrasting with the opposite side called the base. For an isosceles triangle the apex is the vertex where the two sides of equal length meet.
References
- Weisstein, Eric W., "Apex" from MathWorld.
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