it can in accompaniment with squares.
No, not if your floor is flat. Regular pentagons do not tile the plane. You will always end up with empty space. You would need to use some other shapes too (or irregular pentagons) http://www2.spsu.edu/math/tile/defs/pentagon.htm
Square.
(8-2)*180 = 1080 degrees
No it can't
The answer will depend on the units used in specifying "12 square" tile.
No, not if your floor is flat. Regular pentagons do not tile the plane. You will always end up with empty space. You would need to use some other shapes too (or irregular pentagons) http://www2.spsu.edu/math/tile/defs/pentagon.htm
wall tiles are used on walls. floor tiles are used on floors. if you want to interchange. you can make the wall tile as floor tile and vice-versa
Yes, travertine tile can be used on the floor of a gas fireplace.
An octagon can be used to create a tessellation, but an octagon cannot tessellate on its own.
Square.
Purchase a tube of colored caulk matching (or close to) the grout you used on the floor tile.
Slippy floor.
You cannot use a regular octagon on it's own to make a tiling pattern without any gaps. However a regular Octagon and a square can be used together to make a tessellation. Many people think that regular octagons tesselate on their own because they do not appreciate the need for no gaps.
it may not be adhereing to the tile adhesive (not enough used or improperly installed?)
Green screed by BAL
If what you mean by carpet sweeper, is a regular vacuum, then they can only be used on tile floors if they have a selection that is special for bare floors.
yes because, well lets let you answer this one why.