A fourteen sided figure is either a "tetradecagon" or a "tetrakaidecagon".
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14
The name of a 14 sided polygon is tetradecagon.
A 14 sided shape is called a Tetradecagon.
A 16 sided polygon is made from 14 triangles
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14
A fourteen sided figure is either a "tetradecagon" or a "tetrakaidecagon".
tetrakaidecahedron
There are many possibilities, and here are a couple: A dodecagonal prism (dodecagon = 12 sided plane figure); A heptagonal pyramid (heptagon = 7 sided plane figure).
2160 degrees (14-2)*180 = 2160
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It has 16 sides and contains 14 triangles
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14
tetradecagon, although most mathematicians would use "14-gon."