A decagon is a polygon with ten sides and ten angles. The word "decagon" comes from the Greek words "deka," meaning ten, and "gonia," meaning angle. Decagons can be regular, where all sides and angles are equal, or irregular, where the sides and angles can vary. In a regular decagon, each interior angle is 144 degrees, and the sum of all interior angles is 1440 degrees.

Decagon Calculators

• Decagon Area
• Decagon Volume
• Decagon Weight