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”.- National Nordic Museum (Wikipedia)
The National Nordic Museum (previously Nordic Heritage Museum and then Nordic Museum) is a museum in the Ballard neighborhood of Seattle, Washington, United States, dedicated to the Nordic history, art, culture, and the heritage of the area’s Nordic immigrants. It was founded in 1980 as the Nordic Heritage Museum, moved into a permanent, purpose-built facility in 2018 named the Nordic Museum, and was designated as the National Nordic Museum in 2019. The museum serves as a community gathering place and shares Nordic culture by exhibiting art and objects, preserving collections, and providing educational and cultural experiences from Danish, Finnish, Icelandic, Norwegian and Swedish Americans. The geographical region covered by the Museum includes the entire Nordic region (Denmark, Finland, Iceland, Norway, Sweden, Estonia, the regions of the Faroe Islands, Greenland, and Åland, and the cultural region of Sápmi).
- 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°.