sentences:  The area of a regular hexacontagon is (with )
  
  and its inradius is
  
  The circumradius of a regular hexacontagon is
  
  This means that the trigonometric functions of π/60 can be expressed in radicals.Since 60 = 22 × 3 × 5, a regular hexacontagon is constructible using a compass and straightedge.As a truncated triacontagon, it can be constructed by an edge-bisection of a regular triacontagon.