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椭圆的光学性质
Author:
孟宝兴
GeoGebra
New Resources
兩組對邊相等的四邊形
第八周作业
兩位數除以一位數（一）
畫出對稱圖形
【案例】2018年全国1卷理科12题
Discover Resources
simple arena
分數乘法與除法
以剪貼比較圖形大小 題3
三圓相切
行星運動
Discover Topics
Tangent Function
Geometric Mean
Exponential Functions
Plane Figures or Shapes
Equilateral Triangles