三角形的重心說明 – GeoGebra
本檔案由鍾元杰老師製作,感謝鍾老師熱心分享。
利用本檔案,即可說明三角形重心的面積及長度比性質。
網址:https://www.geogebra.org/m/eWxQhquY
說明
![點選「左右△顯隱」,說明丙=丁。](https://amathing.worldwp-content/uploads/Gravity-Center-of-a-Triangle-1.png)
![點選「伸縮上△」,說明甲+乙+丙=己+戊+丁。](https://amathing.worldwp-content/uploads/Gravity-Center-of-a-Triangle-2.png)
![點選「伸縮下△」,說明甲+乙=己+戊。](https://amathing.worldwp-content/uploads/Gravity-Center-of-a-Triangle-3.png)
![點選「左右△減半」,說明甲=乙=丙=丁=戊=己。](https://amathing.worldwp-content/uploads/Gravity-Center-of-a-Triangle-4.png)
![點選「1/6性質」,說明面積六等分。](https://amathing.worldwp-content/uploads/Gravity-Center-of-a-Triangle-5.png)
![點選「1/3性質」,說明面積三等分。](https://amathing.worldwp-content/uploads/Gravity-Center-of-a-Triangle-6.png)
![點選「2:1證明」,說明線段比關係。](https://amathing.worldwp-content/uploads/Gravity-Center-of-a-Triangle-7.png)
歡迎加入「數」位教「學」軟體應用,觀看更多精彩分享。
https://www.facebook.com/groups/1624599367755119/
本檔案由鍾元杰老師製作,感謝鍾老師熱心分享。
利用本檔案,即可說明三角形重心的面積及長度比性質。
網址:https://www.geogebra.org/m/eWxQhquY
說明
歡迎加入「數」位教「學」軟體應用,觀看更多精彩分享。
https://www.facebook.com/groups/1624599367755119/