a decagon
an Octagon
It is a nonagon which is a polygon with 9 sides
Decagon. A decagon is the name of a ten sided shape.
A pentagon has 5 sides
An octagon has 8 sides
decagon
Decagon
Scalene.
Pentagonal trapezohedron.
Decagon.
I believe it is a Decagon
A shape with five sides is pentagonal.