A cone !
There are no triangular prisms in faces. Faces are 2-d shapes and these cannot contain 3-d shapes in them.
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A normal cone has a circular face as its base, and a slanting surface which goes from the circumference of this face to the vertex. So it has two faces. Mathematicians also refer to the infinite equivalent as a cone. This could be considered as a 3-d shape with one face.
None. A triangle is a 2-D figure, not a 3-D figure. Therefore, the concepts of faces and bases do not apply to it.
A cone
A cone !
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. Several of these may be considered as octahedron cone and the answer depends on which particular shape you have in mind.
There are no triangular prisms in faces. Faces are 2-d shapes and these cannot contain 3-d shapes in them.
There are no triangular prisms in faces. Faces are 2-d shapes and these cannot contain 3-d shapes in them.
None, its a sphere
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The tip of the cone.
A normal cone has a circular face as its base, and a slanting surface which goes from the circumference of this face to the vertex. So it has two faces. Mathematicians also refer to the infinite equivalent as a cone. This could be considered as a 3-d shape with one face.
A 3-D shape with 8 faces is an octahedron.
None. A triangle is a 2-D figure, not a 3-D figure. Therefore, the concepts of faces and bases do not apply to it.
A 3-D cone would act as the ice cream cone and a 3-D sphere would act as the ball of ice cream.