Sphere
According to Euler none; for all 3d shapes: Vertices + Faces = Edges + 2 ⇒ 12 + 8 = 19 + 2 ⇒ 20 = 21 So unless 20 does equal 21, no 3d shape has 8 faces, 19 edges and 12 vertices. Any 3d shape with 8 faces would be an octahedron.
Yes, the Platonic solids (excluding the sphere which does not have vertices).
edge
# of faces + # of edges + # of vertecies + 2
Cylinder
It Is A Cone
retangle
pyramid
octagon
Sphere
Sphere ( 0 faces , 0 edges , 0 vertices )
That 3D shape is called triangular pyramid.
According to Euler none; for all 3d shapes: Vertices + Faces = Edges + 2 ⇒ 12 + 8 = 19 + 2 ⇒ 20 = 21 So unless 20 does equal 21, no 3d shape has 8 faces, 19 edges and 12 vertices. Any 3d shape with 8 faces would be an octahedron.
Yes, the Platonic solids (excluding the sphere which does not have vertices).
A solid cone has 2 faces and 1 edge
Oh, dude, that's like asking me to name a shape at this point. It's a little thing called a tetrahedron. So, basically, it's got those four triangular faces and four vertices, like a fancy pyramid but with a cooler name. So, if you ever need to impress someone at a party with your geometry knowledge, just drop the word "tetrahedron" and watch them be amazed.