yes
yes
Yes.
All regular polygons do.
almost all even number of sided polygons, regular has to be
yes
no
All regular ones do.
yes
Yes.
All regular polygons do.
Regular polygons.
almost all even number of sided polygons, regular has to be
All of them have rotational symmetry because all the sides and angles have to be the same in order for the polygon to be a regular polygon
There would be too many to name. All regular polygons have a line of symmetry, but there are still polygons that don't.
yes
A circle (infinitely many lines of symmetry), ellipse, rectangle, and all regular polygons.