A regular 16-gon, also known as a hexadecagon, will not tessellate a plane. In order for a polygon to tessellate a plane, the interior angles of the polygon must divide evenly into 360 degrees. The interior angle of a regular hexadecagon is 157.5 degrees, which does not evenly divide into 360 degrees. Therefore, a regular 16-gon will not tessellate a plane.
No
Square.
No.
yes -novanet
yes no yes no
No
Square.
No.
No.
yes -novanet
It has two regular polygons which can be used together to tessellate a plane.
A regular octagon will not tessellate but an irregular one can.
yes no yes no
Equilateral triangle, square and regular hexagon.
The answer depends on the size of the plane and of each polygon.
Triangle, square and hexagon
No. Equilateral heptagons (7 sided figures) do not tessellate the plane. Not if no other polygons are allowed. But if you allow a (non-equilateral) pentagon then you might be able to tessellate the plane!