原帖由 tomargom 于 2009-6-19 19:30 发表 5 t2 k( R% {( r" x- D) C
使劲猜! 8 [) ~' U( o/ R) ?8 ]7 P9 J2 G* ?
The # R* [$ P3 P8 |% [1 l. J y1 j8 i
Square and the Triangle form within the circle, but there is an inner circle and an inner square, ! Y0 e8 h8 n/ w3 y' W y- I) F
as well as an outer square and an outer circle, which prove the fourth dimension ...