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Construct the envelope of the light rays emitted from a radiant point source at infinity after reflection by the semi-circle. 
Construct the envelope of the light rays emitted from a radiant point source at the circumferenceafter reflection by the same circle. 
Maple Files
w501.mws
w502.mws
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Construct the envelope formed by a fix diameter of a circle rolling along a straight line. 
Construct the envelope formed by a fix diameter of a circle rolling along a fixed circle of the same size. 
Maple Files
w503.mws
w504.mws
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 Construct the envelope formed by a fix diameter of a circle rolling along a fixed circle twice the diameter.   Cnonstruct this figure:
Maple Files
w505.mws
w506.mws
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 Cnonstruct this figure:  Construct this design:
Maple Files
w507.mws
w508.mws
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 Construct the nested squares as thus:   Constructed nested triangles as thus: 
Maple Files
w509.mws
w510.mws
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 Construct this pattern:  Construct the family of ellipses  x=(1-t)cos s, 
y=t sin s, 0<= s <= 2*Pi;
 as t ranges in [0,1]. 
Maple Files
w511.mws
w512.mws
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 Construct the concentric and coaxial ellipses of constant area:   Construct this pattern. 
Maple Files
w513.mws
w514.mws
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 Construct this pattern.   Construct the reflections of a light ray trapped inside a reflective ellipse. There are two case
Maple Files
w515.mws
w516.mws
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 Construct the reflections of a light ray trapped inside a reflective ellipse. There are two case  
Maple Files
w517.mws
 
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