圓點(0.0) M為AB之中點(A座標+B座標除以2)
https://www.hk01.com/%E5%8D%B3%E6%99%82%E5%9C%8B%E9%9A%9B/1061496/%E5%B7%B4%E8%A5%BF%E5%80%AB%E5%B8%B8%E8%A1%80%E6%A1%88-%E6
https://hk.on.cc/hk/bkn/cnt/news/20240926/mobile/bkn-20240926150907489-0926_00822_001.html
https://www.cna.com.tw/news/amov/202409270273.aspx
https://tw.news.yahoo.com/%E8%8F%AF%E7%A2%A9%E9%AB%98%E5%B1%A4%E7%95%B0%E5%8B%95-%E9%9B%86%E5%9C%98%E7%B8%BD%E8%A3%81%E6%9B%
你是哪一種風味？
圓點(0.0)
M為AB之中點(A座標+B座標除以2)