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HELP

function f(x) { y = 1/0; return y }
...
aX = -1; bX = 1; aY = -1; bY = 1
Dx = 1; Dy = 1
...
C2="cyan"
K=Math.PI/180
Lx=[0,Math.cos(210*K),Math.cos(-30*K),0]; Ly=[1,Math.sin(210*K),Math.sin(-30*K),1]
L1x=[0,Math.cos(210*K),Math.cos(-30*K),0]; L1y=[-1,Math.sin(-210*K),Math.sin(30*K),-1]
L2x=[Math.cos(210*K)/3,Math.cos(210*K)/3*2,Math.cos(210*K)/3,-Math.cos(210*K)/3,Math.cos(-30*K)/3*2,Math.cos(-30*K)/3,Math.cos(210*K)/3]
L2y=[0.5,0,-0.5,-0.5,0,0.5,0.5]