Yes, you are mistaken, owl. Compasses are not assumed to collapse when picked up. Even with this ability, however, they cannot be used to trisect an angle (even with a straight edge).
blackjack
<a href="http://c.casalemedia.com/c?s=51816&f=3&id=0" target="_blank"><img src="http://as.casalemedia.com/s?s=51816&u=http://perplexus.info&f=3&id=0&if=0" width="120" height="600" border="0"></a>
flooble's webmaster puzzle
re(2): solution
