alleryThe line l of a cone is called its:
AArm
BAxis
CApex
DArc
Answer & Solution
Correct answer: B. Axis
1. A cone is symmetric about one line.
2. The vertex lies on it.
3. The point V is called the vertex; the line l is the axis of the cone.
4. So the answer is the axis.
_Source: syllabus Mathematics, Ch 10 'Conic Sections'_
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