漂亮，吧

想再用几何画板，三等分任意角，试一试吧

瞎混的，不当真啊

70楼正解

h1t2t3p://t.55bbs.com/boards/694355/

1354190533@qq.com

t.55bbs.com/boards/694237

t.55bbs.com/boards/694353/t.55bbs.com/boards/694352/t.55bbs.com/boards/694351/t.55bbs.com/boards/694350/t.55bbs.com/boards/694239/t.55bbs.com/boards/694238/t.55bbs.com/boards/694237/t.55bbs.com/boards/694232/t.55bbs.com/boards/694229/t.55bbs.com/boards/694227/t.55bbs.com/boards/694223/t.55bbs.com/boards/694221/t.55bbs.com/boards/694219/t.55bbs.com/boards/694217/t.55bbs.com/boards/694215/t.55bbs.com/boards/694213/t.55bbs.com/boards/694212/t.55bbs.com/boards/694209/t.55bbs.com/boards/694207/t.55bbs.com/boards/694204/t.55bbs.com/boards/694202/t.55bbs.com/boards/694200/t.55bbs.com/boards/694198/t.55bbs.com/boards/694197/t.55bbs.com/boards/694196/t.55bbs.com/boards/694194/t.55bbs.com/boards/694193/t.55bbs.com/boards/694192/t.55bbs.com/boards/694190/t.55bbs.com/boards/694188/t.55bbs.com/boards/694187/t.55bbs.com/boards/694183/

给个几何含义比较强的作法。

再给个简单的。