No, it will not tessellate.
yes
Not everything tessellates
Yes, squares can tessellate.
A rhombus tessellates.
no
Triangles, Squares and Hexagons always tessellate.
No, a hexagon is not a tessellation. Some hexagons can tessellate a plane, others will not.
No. An equilateral polygon with 5 or with 7 or more sides will not tessellate a plane.
An octagon has 8 angles.An octagon has 8 angles.An octagon has 8 angles.An octagon has 8 angles.
an octagon...
No, but an octagon is.
An octagon-based prism.An octagon-based prism.An octagon-based prism.An octagon-based prism.