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扇形面積
Author:
李春培
扇形面積
GeoGebra
New Resources
畫出對稱圖形
算柱 (兩位數)
異分母分數減法
判斷球體
兩位數加法
Discover Resources
HW 1
向量求和动画演示
探索“三等分点连线围成的小三角形”的特点
同位角__垂直平行綫
shuangquxian
Discover Topics
Pythagoras or Pythagorean Theorem
Percentages
Right Triangles
Tangent Line or Tangent
Function Graph