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sum of interior angle
Author:
cheung shan ni
Topic:
Angles
ok done
GeoGebra
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兩位數除以一位數（一）
兩位數加法
異分母分數減法
柱體建築師
GeoGebra笔记功能体验课件
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y=(x-a)²的圖形
正四面體
旋轉動畫
glt-h02-05-圓錐展開
微元法演示
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Mathematics
Cylinder
Median Line
Logarithmic Functions
Cube