Answer
2D:A Nonagon 3D:Nonahedron
Answer
A polygon is any closed, plane figure made up of line segments. The endpoints of each line segment is connected to the endpoints of two adjacent segments. The point where two segments meet is called a vertex. The segments themselves are referred to as the sides of the polygon. The number of sides will equal the number of vertices.
Polygons are classified by the number of sides they possess for example, triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon, undecagon, dodecagon, triskadecagon, tetradecagon... are names of polygons with 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 sides (respectively).
A figure with nine sides is called a "nonagon".
A nine sided plane figure is a nonagon. A nine sided three dimensional figure is a nonahedron.
It is called a nonagon. There currently is no official name for a nine-sided polygon. However, two names have been proposed for such a figure: the first is a Nonagon; the second is an Enneagon.
An eight sided figure is called an octagon.
A 3-sided figure is called a triangle.
A four sided figure is called a quadrilateral.
A 12-sided figure is called a dodecagon.
A seven sided figure is called a heptagon.
A six-sided plane figure is called a hexagon.
A six-sided plane figure is called a hexagon.
A six sided figure is called a hexagon.
A six sided figure is called a hexagon.
Yes, an eight-sided figure is called an octagon.