a dodecahedron
piecedecagon
A shape's sides are called faces.
A seven sided shape is called a heptagon or a septagon.......
sedfatserasdfogagon myriagon
A one sided shape (ignoring the poor grammar) is a line. Is that what you wanted?
piecedecagon
Myriagon.
A shape's sides are called faces.
A shape that has 11 sides is called a hendecagon.
An octagon
A nonagon
icosikaienneagon
A nine sided shape is called a nonagon.
a line
icosakaitetragon
Interior angle
I guess 13 angle shape