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賺賠：例1
Author:
GeoGebra Institute of Hong Kong
Topic:
Percentages
賺賠
GeoGebra
New Resources
畫出對稱圖形
兩位數加法
拼砌四邊形
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
Discover Resources
平行四邊形有甚麼特性？
數值滑桿
S3 Ch4.1 立體圖形(3D圖) - 十字形棱柱(ViewA)
拼出三角形 的複本
畫出對稱圖形
Discover Topics
Expected Value
Perimeter
Variance
Curve Sketching
Linear Programming or Linear Optimization