A seven sided shape is called a heptagon or a septagon.......
It's called a side or edge.
A one sided shape (ignoring the poor grammar) is a line. Is that what you wanted?
A seven or 7 sided polygon shape is called a Heptagon(hep-ta-gone).
Any plane shape on the side of a polyhedron is called a face.
A shape that has 11 sides is called a hendecagon.
An octagon
icosikaienneagon
A nonagon
A nine sided shape is called a nonagon.
a line
icosakaitetragon
Interior angle
I guess 13 angle shape
A seven sided shape is called a heptagon or a septagon.......
An edge.
A shape with ten sides is called a decagon.