A nonagonal prism is a geometric polyhedron whose top and bottom are nonagons (polygons with nine sides) connected to each other by nine rectangles.
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Nonagon
An hexagonal prism would fit the given description
A nonagonal prism has two nonagonal bases and rectangular lateral faces. To find the total number of diagonals in a nonagonal prism, we first calculate the diagonals in one nonagon, which is given by the formula ( \frac{n(n-3)}{2} ). For a nonagon ((n = 9)), this results in 27 diagonals. Since the prism has two bases, the total number of diagonals in the prism is ( 27 + 27 + 18 = 72 ), where the 18 comes from the diagonals connecting vertices from one base to the other.
A decagon based pyramid. It is a hendecahedron but that can take many shapes. A nonagon based prism, for example.
Nonagonal is a prefix. A nonagon is a nine sided polygon. A nonagonal prism, is a prism.
11
Nonagon
An hexagonal prism would fit the given description
A decagon based pyramid. It is a hendecahedron but that can take many shapes. A nonagon based prism, for example.
nonagon
Because nonagon means 9 sides
A decahedron. Some decahedron shapes are a nonagon-based pyramid, an octagon based prism, or a pentagon based di-pyramid.
Not a regular nonagon.
There are many possibilities. Some of them are: A nonagon-based pyramid. A hexagonal prism. A hexagonal dipyramid (two hexagon-based pyramids stuck together on their bases).
Nonagon.
A nonagon has nine sides.