A shape's sides are called faces.
A cylinder seems to fit the description
a circle
A seven sided shape is called a heptagon or a septagon.......
It's called a side or edge.
A shape's sides are called faces.
A cylinder seems to fit the description
A shape that has 11 sides is called a hendecagon.
icosikaienneagon
A nonagon
An octagon
A nine sided shape is called a nonagon.
a circle
a line
Interior angle
icosakaitetragon
I guess 13 angle shape