1.Construct this pretty flower
2.Construct the line segments joining (cos(t),0) with (0,sin(t)) as t ranges over [0,2p].
3.Construct the velocity vector field along a constant motion around a circle.
4.Construct this figurer.
5.Construct the line segments joining [cos(t),sin(t)] with [cos(2t),sin(2t)] as tranges over [0,2p].
6.Construct this figure.
7.Construct this graph associated with the logistic equation x ' = ax(1-x)
8.Draw 20 concentric circles as thus.
9.Construct the circles with center at (cos(t),sin(t)) passing through the point (1,0) with t ranging over [0,2p].
10.Construct the circles with center at (cos(t),sin(t)) and tangent to the y-axis with t ranging over [0,2p].
11.Construct the circles with center at (cos(t),sin(t)) and and passing through 　(2cos(t)/3+cos(2t)/3,2sin(t)/3+sin(2t)/3) with t ranging over [0,2p].
12.Construct this figure.
13.Construct this pattern.
14.Construct the reflections of a light ray inside a square.　

> restart:

> m:=1.7123:

> x:=0:

> y:=0:

> v:=[[x,y]]:

> for k to 100 do xx:=floor(x)+1:yy:=floor(y)+1:if (yy-y)>m*(xx-x) then x:=xx:y:=m*x else y:=yy:x:=y/m:fi:v:=[op(v),[1-abs(x-2*floor(x/2)-1),1-abs(m*x-2*floor(m*x/2)-1)]] od:

> plot (v,scaling=constrained);