• 那就推翻勾股定理了 -阿尤- ♂ (0 bytes) () 12/07/2016 postreply 17:39:57
• Triangle inscribed in a semicircle is always a right triangle, t -oops_yz- ♀ (131 bytes) () 12/07/2016 postreply 17:44:44
• 所以题目错 -阿尤- ♂ (0 bytes) () 12/07/2016 postreply 21:16:22