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Intersection of a 2D plane and double napped cone such that the plane does not pass through the vertex of cone and intersect perpendicularly is
A)a circle
B)a point
C)a pair of intersecting lines

 Jul 16, 2021
 #1
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I do not know what intersects perpendicularly means.  Perpendicular to what?

 

Here are your options:

 

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 Jul 17, 2021

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