%mainfile=app-pie
verbatimtex 
\documentclass{article} 
%\usepackage{concrete} 
\usepackage{euler}
\begin{document} 
etex;

beginfig(2);%file=app-one-half.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z3--z1;			

label.rt(btex $0$ etex,z1);
label.lft(btex $180$ etex,z3);
endfig;

beginfig(3);%file=app-one-third.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z0--z1;
draw z0--1in*dir 120;
draw z0--1in*dir 240;

label.rt(btex $0$ etex,z1);
label.ulft(btex $120$ etex,1in*dir 120);
label.llft(btex $240$ etex,1in*dir 240);

endfig;

beginfig(4);%file=app-one-fourth.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z3--z1;
draw z2--z4;

label.rt(btex $0$ etex,z1);
label.top(btex $90$ etex,1in*dir 90);
label.lft(btex $180$ etex,1in*dir 180);
label.bot(btex $270$ etex,1in*dir 270);
endfig;

beginfig(5);%file=app-one-fifth.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z0--z1;
draw z0--1in*dir 72;
draw z0--1in*dir 144;
draw z0--1in*dir 216;
draw z0--1in*dir 288;

label.rt(btex $0$ etex,z1);
label.urt(btex $72$ etex,1in*dir 72);
label.ulft(btex $144$ etex,1in*dir 144);
label.llft(btex $216$ etex,1in*dir 216);
label.lrt(btex $288$ etex,1in*dir 288);

endfig;

beginfig(6);%file=app-one-sixth.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z3--z1;
draw 1in*dir 60--1in*dir 240;
draw 1in*dir 120--1in*dir 300;

label.rt(btex $0$ etex,z1);
label.urt(btex $60$ etex,1in*dir 60);
label.ulft(btex $120$ etex,1in*dir 120);
label.lft(btex $180$ etex,1in*dir 180);
label.llft(btex $240$ etex,1in*dir 240);
label.lrt(btex $300$ etex,1in*dir 300);

endfig;

beginfig(7);%file=app-one-seventh.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z0--z1;
draw z0--1in*dir 360/7;
draw z0--1in*dir 720/7;
draw z0--1in*dir 1080/7;
draw z0--1in*dir 1440/7;
draw z0--1in*dir 1800/7;
draw z0--1in*dir 2160/7;


label.rt(btex $0$ etex,z1);
label.urt(btex $360/7$ etex,1in*dir 360/7);
label.top(btex $720/7$ etex,1in*dir 720/7);
label.ulft(btex $1080/7$ etex,1in*dir 1080/7);
label.llft(btex $1440/7$ etex,1in*dir 1440/7);
label.bot(btex $1800/7$ etex,1in*dir 1800/7);
label.lrt(btex $2160/7$ etex,1in*dir 2160/7);

endfig;

beginfig(8);%file=app-one-eighth.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z3--z1;
draw z2--z4;
draw 1in*dir 45--1in*dir 225;
draw 1in*dir 135--1in*dir 315;

label.rt(btex $0$ etex,z1);
label.urt(btex $45$ etex,1in*dir 45);
label.top(btex $90$ etex,1in*dir 90);
label.ulft(btex $135$ etex,1in*dir 135);
label.lft(btex $180$ etex,1in*dir 180);
label.llft(btex $225$ etex,1in*dir 225);
label.bot(btex $270$ etex,1in*dir 270);
label.lrt(btex $315$ etex,1in*dir 315);

endfig;

beginfig(9);%file=app-one-ninth.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z0--z1;
draw z0--1in*dir 40;
draw z0--1in*dir 80;
draw z0--1in*dir 120;
draw z0--1in*dir 160;
draw z0--1in*dir 200;
draw z0--1in*dir 240;
draw z0--1in*dir 280;
draw z0--1in*dir 320;

label.rt(btex $0$ etex,z1);
label.urt(btex $40$ etex,1in*dir 40);
label.urt(btex $80$ etex,1in*dir 80);
label.ulft(btex $120$ etex,1in*dir 120);
label.ulft(btex $160$ etex,1in*dir 160);
label.llft(btex $200$ etex,1in*dir 200);
label.llft(btex $240$ etex,1in*dir 240);
label.lrt(btex $280$ etex,1in*dir 280);
label.lrt(btex $320$ etex,1in*dir 320);

endfig;

beginfig(10);%file=app-one-tenth.eps
z0=(0,0);	
z1=(1in,0);
z2=(0,1in);
z3=-z1;		
z4=-z2;

draw z1..z2..z3..z4..cycle;
draw z3--z1;
draw z0--1in*dir 36;
draw z0--1in*dir 72;
draw z0--1in*dir 108;
draw z0--1in*dir 144;
draw z0--1in*dir 180;
draw z0--1in*dir 216;
draw z0--1in*dir 252;
draw z0--1in*dir 288;
draw z0--1in*dir 324;

label.rt(btex $0$ etex,z1);
label.urt(btex $36$ etex,1in*dir 36);
label.urt(btex $72$ etex,1in*dir 72);
label.ulft(btex $108$ etex,1in*dir 108);
label.ulft(btex $144$ etex,1in*dir 144);
label.lft(btex $180$ etex,1in*dir 180);
label.llft(btex $216$ etex,1in*dir 216);
label.llft(btex $252$ etex,1in*dir 252);
label.lrt(btex $288$ etex,1in*dir 288);
label.lrt(btex $324$ etex,1in*dir 324);


endfig;				

\verbatimtex
\end{document}
etex;

end		%tells metapost this is the end of the file