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gjh-g04-01 差的平方公式
Author:
均一
GeoGebra
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兩組對邊相等的四邊形
拼砌四邊形
畫出對稱圖形
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
Discover Resources
圖形的內部、外部與周界
Locus (Two points 2)
GGB2
squence
算幾不等式
Discover Topics
Hyperbola
Means
Constructions
Trapezium
Cone