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三角函数的定义
Author:
穆勒
GeoGebra
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畫出對稱圖形
兩位數除以一位數(二)
第八周作业
兩組對邊相等和有直角的四邊形
兩位數除以一位數(一)
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柏拉圖宇宙模型
Redefining Trigonometry by a Unit Circle
畢氏定理拼圖
「相似三角形」任务3的副本
翰林數學_2下_CH3-1_三角形的內角和
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Median Line
Geometric Mean
Square
Limits
Cylinder