Dodecagon (Wikipedia)
In geometry, a dodecagon, or 12-gon, is any twelve-sided polygon.- In geometry, a hendecagon (also undecagon or endecagon) or 11-gon is an eleven-sided polygon. (The name hendecagon, from Greek hendeka “eleven” and –gon “corner”, is often preferred to the hybrid undecagon, whose first part is formed from Latin undecim “eleven”.
- Autonomous communities of Spain (Wikipedia)
In Spain, an autonomous community (Spanish: comunidad autónoma) is the first sub-national level of political and administrative division, created in accordance with the Spanish Constitution of 1978, with the aim of guaranteeing limited autonomy of the nationalities and regions that make up Spain.
- Decagon (Wikipedia)
In geometry, a decagon (from the Greek δέκα déka and γωνία gonía, “ten angles”) is a ten-sided polygon or 10-gon. The total sum of the interior angles of a simple decagon is 1440°.