Problem 5c.

#
import math
def decagon (x,y,s):
 x1=x
 y1=int(y+3.077*s)
 x2=int(x+1.9021*s)
 y2=int(y+2.459*s)
 x3=int(x+2.911*s)
 y3=int(y+s)
 x4=x3
 y4=int(y-s)
 x5=x2
 y5=int(y-2.459*s)
 x6=x1
 y6=int(y-3.077*s)
 x7=int(x-1.9021*s)
 y7=y5
 x8=int(x-2.911*s)
 y8=y4
 x9=x8
 y9=y3
 x10=x7
 y10=y2
 g.line (x1,y1,x2,y2)
 g.line (x2,y2,x3,y3)
 g.line (x3,y3,x4,y4)
 g.line (x4,y4,x5,y5)
 g.line (x5,y5,x6,y6)
 g.line (x6,y6,x7,y7)
 g.line (x7,y7,x8,y8)
 g.line (x8,y8,x9,y9)
 g.line (x9,y9,x10,y10)
 g.line (x10,y10,x1,y1)
 
while 1:
 g.paper (13)
 g.pen (100)
 m1=g.getMouse (1)
 m2=g.getMouse (2)
 MM=m1*m2/400
 decagon (30,19,MM)
 
 

-gary escudero