Hendecagon Hendecagon 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".) A "regular hendecagon" is represented by Schläfli symbol {11}. A regular hendecagon has internal angles of 147.27 degrees (=147 formula_1 degrees). The area of a regular hendecagon with side length "a" is given by As 11 is not a Fermat prime, the regular hendecagon is not constructible with compass and straightedge. Because 11 is not a Pierpont prime, construction
How Many Billboards? Art Instead How Many Billboards? Art Instead How Many Billboards? Art Instead, was a large scale urban art exhibition in Los Angeles, California. The exhibition, which opened in February 2010, concurrently displayed 21 unique billboards created by various leading contemporary Californian artists. Organized by MAK Center director Kimberli Meyer and co-curated by Nizan Shaked and Dr. Gloria Sutton, the exhibition asked artists "to create a new work that critically responded to the medium of the billboard and interpreted its role in the urban landscape". Notable contemporary artist Martha Rosler and her son Josh Neufeld were among some of the commissioned artists. https://www.fastcompany.com/1559860/los-angeles-swaps-21-billboards-art