说了就走的方法,只要同时移动A和C,便可补上A'BCD不是凸形的漏洞。
因为A'C'对称,必过O点,A'C'和BD 的交点在A'BC'D的内部。
说了就走的方法,只要同时移动A和C,便可补上A'BCD不是凸形的漏洞。
因为A'C'对称,必过O点,A'C'和BD 的交点在A'BC'D的内部。
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy