Cone

Cone[{{x1,y1,z1},{x2,y2,z2}},r] represents a cone with a base of radius r centered at (x1,y1,z1) and a tip at (x2,y2,z2). 

Cone[{{x1,y1,z1},{x2,y2,z2}}] represents a cone with a base of radius 1.

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