a coneA cone.
Cone
cone
triangle * * * * * A triangle is NOT a 3d shape! A cube.
A cone
CONE
Any polyhedron.
cone
is it a vertex
A cone.
The question is not particularly clear but I suspect that the answer is a vertex.
a coneA cone.
Cone
cone
None
triangle * * * * * A triangle is NOT a 3d shape! A cube.
a cone