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七上第03章《代数式》P83数学活动1-火柴棍拼三角形及方阵
Author:
赵朝东
GeoGebra
New Resources
兩位數加法
兩位數除以一位數（一）
三位數除以一位數（二）
兩組對邊相等的四邊形
兩位數除以一位數（二）
Discover Resources
rectangular
极坐标
立體圓錐與斜切面關係
ROC國徽1060310
任意四边形各边中点的连线必构成平行四边形.许兴华数学
Discover Topics
Tangent Line or Tangent
Vectors 3D (Three-Dimensional)
Circumcircle or Circumscribed Circle
Sequences and Series
Surface