就是說那條10厘米的邊是彎的就可以了,
這樣三角形不存在於二維空間,但是存在於三維空間
所有跟帖:
• Or 4維空間... -一燈可除千年暗- ♂ (0 bytes) () 05/19/2016 postreply 19:07:36
• Or 4維空間... -一燈可除千年暗- ♂ (0 bytes) () 05/19/2016 postreply 19:07:36
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