Definition:Cone/Double Napped Cone

From ProofWiki
Jump to navigation Jump to search

Definition

A double napped cone is a cone where the lines joining the apex to the circumference of the base extend indefinitely in either dimension:


DoubleNappedCone.png


Nappe

Each of the halves of a double napped cone is a nappe.


Also known as

A double napped cone is also known as a double cone.


Also see


Sources