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第4题
Author:
罗辑数学
Topic:
Similar Triangles
GeoGebra
New Resources
祖冲之的期望：内棋与外棋
平行線的斜率
圓周公式的應用
漂亮的摇摆曲线
兩位數除以一位數（一）
Discover Resources
三角形面積
rectangular
S5 chauyy
正方体截面
撒针估算面积实验
Discover Topics
Division
Area
Cone
Upper and Lower Sum or Riemann Sum
Ratios
