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1060420內接def
Author:
陳正鴻
GeoGebra
New Resources
拼砌四邊形
找出對稱軸
球體建築師
三位數除以一位數（二）
第八周作业
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單相感應電動機原理
跳舞的六角形
Hyperbola_Horizontal
橢圓1--同心圓法
半圆面积的微积分动态演示.许兴华数学
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Cuboid
Numbers
Terms
Solids or 3D Shapes
Interest Calculation