Difference between revisions of "Tridecagon"
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A '''tridecagon''' is a polygon with 13 sides. | A '''tridecagon''' is a polygon with 13 sides. | ||
| − | It has an internal angle degree of ~152.308 degrees and a total of 6840 degrees. The area is <math>A={\frac{13}{4}} a^{2} \cot {\frac{\pi}{13}}</math> which is about <math>13.1858 a^2</math>. This cannot be constructed by using a compass and straightedge, but can be constructed using an angle trisector or neusis. The side length of a tridecagon is <math>r \cdot 2 \cdot \sin{\frac{\pi}{13}}</math> | + | It has an internal angle degree of ~152.308 degrees and a total of 6840 degrees. The area is <math>A={\frac{13}{4}} a^{2} \cot {\frac{\pi}{13}}</math> which is about <math>13.1858 a^2</math>. This cannot be constructed by using a compass and straightedge, but can be constructed using an angle trisector or neusis. The side length of a tridecagon is <math>r \cdot 2 \cdot \sin{\frac{\pi}{13}}</math> or <math>2r \cdot 0.23931566428755777</math> |
==See Also== | ==See Also== | ||
* [[Polygon]] | * [[Polygon]] | ||
Revision as of 16:45, 7 June 2024
A tridecagon is a polygon with 13 sides.
It has an internal angle degree of ~152.308 degrees and a total of 6840 degrees. The area is 
which is about 
. This cannot be constructed by using a compass and straightedge, but can be constructed using an angle trisector or neusis. The side length of a tridecagon is 
or 
See Also
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