以平面直角坐标系为背景的几何题可还行？ ~~比如算两点的距离之类的...~~ by Quit @ 2021-01-25 17:44:13
计算几何 by Demoe @ 2021-01-25 17:55:57
好的，那就计算几何吧 by Quit @ 2021-01-25 18:16:55
半平面交 by 㔿㕛㠪䦹冎 @ 2021-01-25 19:29:14