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Author:
Lin Ching Chieh
GeoGebra
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算柱 (兩位數)
錐體建築師
兩位數加法
三位數除以一位數(二)
找出對稱軸
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三角型
廣義角的代換(90,270)
數學電腦繪圖與解題
圓周的計算
地球各緯度的晝長夜長
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Angles
LCM and GCD
Area
Rhombus
Geometric Mean