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翰林數學_2下_CH3-1_三角形的外角定理
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翰林數學
GeoGebra
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GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
三位數除以一位數（二）
四邊形的特性
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根據百分率找數量（一）:例1
tool1
GGBstar
The change in measure in statistics after adding a constant
椭圆与圆的关系的副本
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Similar Triangles
Trigonometric Functions
Unit Circle
Mathematics
Perimeter