For a 2-dimensinal shape ;-
3; trigon (triangle)
4; tetragon ( quadrilatertal)
5; pentagon
6; hexagon
7; heptagon
8 ; Octagon
9 ; nonagon ( The answer to your question).
10 ;decagon.
For a 3-dimensional object.
4; tetrahedron
5 ; pentahedron
6 ; hexahedron
7 ; heptahedron
8 ; octahedron
9 ; nonahedron
10; deahedron.
The nomenclature is bases on Latin.
A 2d nine sided shape is called a nonagon.
A nine sided POLYGON is called a nonagon. Any plain shape bounded by nine straight sides is a nonagon.
A nine sided shape is called a nonagon.
A nine sided shape has 7 triangles
Nine-sided closed figure
A 2d nine sided shape is called a nonagon.
Either a nonagon or an enneagon. Whichever floats your boat.
A nonagon is a nine sided shape.
A nine sided shape or polygon is called a nonagon.
A nine sided POLYGON is called a nonagon. Any plain shape bounded by nine straight sides is a nonagon.
Nonagon
It is called a nonagon and/or an enneagon. They belong to the greater family of polygons.
Nonagon
a nonagon =]
A nonagon
A Polygon
It is a nonagon