此為直線與曲線割圓的本質不同。
1,一條直線可以等分一個圓,則此條直線必須與此圓的圓周兩點C1,C2相交,穿過圓心O。2,圓有圓周,圓周也是曲線。
所有跟帖:
• 小圓麵積是大圓一半,半徑是2^.5/2=.7071... -jinjing- ♀ (0 bytes) () 11/21/2011 postreply 18:27:08
• 小圓麵積是大圓一半,半徑是2^.5/2=.7071... -jinjing- ♀ (0 bytes) () 11/21/2011 postreply 18:27:08
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