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錯角---不平行綫
Author:
chanfushun
GeoGebra
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小数 的副本
四邊形的特性
畫出對稱圖形
異分母分數減法
GeoGebra笔记功能体验课件
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乘法運算
平行線 (同位角 - 位置)
中垂線性質
Angle at centre twice angle at circumference
旋轉的概念
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Exponent
Rectangle
Volume
Statistics
Terms