A polygon with nine sides is called a nonagon.Robert Dixon, Mathographics. New York: Courier Dover Publications: 24 A regular nonagon can be constructed with a regular compass, straightedge, and angle trisector.
A polygon with nine sides is called a nonagon.Robert Dix,on, Mathographics. New York: Courier Dover Publications: 24 A regular nonagon can be constructed with a regular compass, straightedge and angle trisector.