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Author:
Lin Ching Chieh
GeoGebra
New Resources
拼砌四邊形
【案例】2018年全国1卷理科12题
小数 的副本
畫出對稱圖形
三位數除以一位數（一）
Discover Resources
Ratio of angles at the centre and the length of the arcs.
onemove
Tessellations
circle
圓 點 直線 的複本
Discover Topics
Vectors 2D (Two-Dimensional)
Natural Numbers
Statistics
Expected Value
Statistical Characteristics