Impossible. A pentagon, BY DEFINITION, has 5 sides so it cannot be 29 sided!
A 29 sided polygon is called icosikainonagon ( I think )
A polygon with 29 sides is called a 29-gon. In geometry, polygons are named based on the number of their sides, with the prefix indicating the number of sides followed by "-gon." For instance, a triangle has three sides, while a pentagon has five sides. A 29-gon is less commonly discussed but follows the same naming convention.
The name of a 29 sided polygon is Icosikaienneagon.
In geometry a 29 sided shape is referred to as an icosikaidigon. The shape closely resembles an 3 dimensional octagon.
icosikaienneagon
The Pentagon site covers a total of 583 acres, while the building itself sits on 29 acres.
29 is prime. No tree.
I think a icosikaienneagon or icosikainonagon
Originating from one vertex there are 27 triangles
knowing that the outer wall is 921 feet and using A=(half)(apothem)(perimeter) you can determine the inside walls to be about 338 feet ... check my math though! if that be the case, then the inside pentagon has an area of 4.5 acres (use trig and formula above) ... google it and the Pentagon has an area of 29 acres ... 29+4.5 and you get 33.5 which is the are of a pentagon with side 921. hope this helps.
A 29-sided polygon.
Mail Call - 2002 The Pentagon 6-5 was released on: USA: 29 April 2005