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Author:
Lin Ching Chieh
GeoGebra
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兩組對邊相等的四邊形
兩位數除以一位數（一）
三位數除以一位數（二）
sanjiaohanshu
【案例】2018年全国1卷理科12题
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Addition and Subtraction of Directed Numbers (1) 有向數加減(1)
圓錐截痕
旁心
六邊形
函数作图工具的副本
Discover Topics
Natural Numbers
Continuity
Special Points
Scalene Triangles
Tree Diagrams