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三角形探究1
Author:
SIN MING WONG
GeoGebra
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兩位數加法
三位數除以一位數（一）
拼砌四邊形
柱體建築師
球体的体积推导（优化版）
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腳踏車痕模擬
圓柱截痕
TEST
六年級_截面_錐體_多邊形
旋轉長方形
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Functions
Root
Median Line
Reflection
Sphere