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°.
What happened to Autumn Lee Stone? The 23-year-old mother of two was strangled with her own shoelaces in a crowded Seattle park in 2019 (reddit.com) It was the last balmy Friday of August, and Green Lake Park in Seattle was bustling with families enjoying the late summer sunshine. The park, located in a dense urban area in the north end of the city, features a large lake ringed by a 2.8-mile bike path as well as multiple playfields, a boathouse, and several docks that are popular amongst fishermen and swimmers.
