41
(Synergetics)
42
(RCBell)The Boardgame Book80
43
BA90°(90°)AACBBCACB90BC2AC
44
()为15.9cm×12.6cm×10.0cm
a×b×cabc
(a/2)
abcbca/2
acb2ab=2c2
b32c3
abc22/321/31
()21/311.261
45
(Boris Kordemsky)(The Moscow Puzzles)
图14
2×2E8(2)