12 faces, 30 edges and 20 vertices.
It has 2 decagons plus 10 rectangles between them giving 12 faces
It has 2 x 10 vertices on each decagon giving 20 vertices
It has 10 edges round each decagon plus another 10 joining the vertices of one decagon to the other decagon's vertices giving 2x10+10 = 30 vertices
6 vertices, 2 triangular faces, 3 rectangular sides, 9 edges
Pentagonal Prism = 2 pentagonal bases + 5 lateral faces Pentagonal Prism = 7 faces Pentagonal Prism has 10 vertices Pentagonal Prism has 15 edges
There are infinitely many polyhedra. Hexagonal Prism, Septagonal Prism, Ocatagonal Prism, Nonagonal Prism, Decagonal Prism, etc...
A rectangular prism has 6 sides and 8 vertices.
5 faces (sides) 9 edges 6 vertices
A decagonal prism has 12 faces.
Sides and faces are the same thing. A hexagonal prism has 8 faces and 12 vertices.
There is no such word as "deconagnol". If you meant decagonal, then the answer is 12 faces. If you did not mean decagonal then please resubmit using corrected spelling.
5
6 vertices, 2 triangular faces, 3 rectangular sides, 9 edges
Pentagonal Prism = 2 pentagonal bases + 5 lateral faces Pentagonal Prism = 7 faces Pentagonal Prism has 10 vertices Pentagonal Prism has 15 edges
There are infinitely many polyhedra. Hexagonal Prism, Septagonal Prism, Ocatagonal Prism, Nonagonal Prism, Decagonal Prism, etc...
A rectangular prism has 6 sides and 8 vertices.
5 faces (sides) 9 edges 6 vertices
It depends on a decagonal what. There will be different answers for a decagonal pyramid, prism, dipyramid, etc.
A rectangular prism has six faces because it has 4 sides and two bases. It also has eight vertices and 12 edges.
A cube or a cuboid has 6 sides or faces, 12 edges and 8 vertices