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圖二的副本
Author:
Siqiu Zeng
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩位數加法
三位數除以一位數（二）
異分母分數減法
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
Discover Resources
line equation
五邊形與三角形等積
glt-h02-06 平行四邊形柱展開
Testing: addition
閱讀鐘面
Discover Topics
Arithmetic
Sphere
Tangent Line or Tangent
Indefinite Integral
Ellipse