There is EQUATION:
X^2/a^2+Y^2/b^2+Z^2/c^2=1,
If a=b=c :all cut face are circles.
a=b not=c,one circle.
a,b,c, total different,no circle.
two circles are impossible.
Think about the Equation
所有跟帖:
• You are great. I agree two circles are impossible. -皆兄弟也- ♂ (237 bytes) () 09/19/2010 postreply 13:38:35