文憑試實戰篇 #20 直角三角形的內心 Incentre of Right-angled Triangle

[@benlo3357]

勁呀

[@kojiharu2861]

Fok Sir,多謝你既分享,我想問有咩program好用要入?

[@mathseasy]

這三個程式是必需的。 1) 聯立方程 2) 直線和圓形的交點 3) 三角形四心

[@hiko3549]

@@mathseasy 如果加多个你会加边个

[@fishingwong]

您好，想問你6:08 用咩apps 黎畫圖，求指教。

[@mathseasy]

Geogebra. It's free.

[@icefamily2002]

many thanks Fok sir😄👍

[@mathseasy]

Keep it up!!

[@sumeshwaryadav5999]

I ka h