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ABC 1
Author:
yatan1018
GeoGebra
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兩位數除以一位數（二）
找出對稱軸
柱體建築師
兩組對邊相等的四邊形
算柱 (兩位數)
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三角形面積與內切圓半徑
餘弦定理
第一次任務
分數乘法
基础知识
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Set Theory
Calculus
Ratios
Conditional Probability
Arithmetic