Yes.
No. You will have smaller square or triangular gaps between them.
A regular octagon cannot tile a flat surface, it needs squares as fillers. An irregular octagon can tile a flat surface alone.
it can in accompaniment with squares.
No, but an octagon and a square can tessellate.
Yes.
No because when u tile an octogon it doesn't have a measure for a square
No. You will have smaller square or triangular gaps between them.
A regular octagon cannot tile a flat surface, it needs squares as fillers. An irregular octagon can tile a flat surface alone.
yes
A regular octagon will not tessellate but an irregular one can.
Yes it can. A regular octagon cannot.
Not by itself.
To turn a 9x9 square into an octagon you can cut corners off the square. It will not be a regular octagon though.
it can in accompaniment with squares.
No, but an octagon and a square can tessellate.
No - because they would leave a small, square-shaped space between each tile.