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平行四邊形_大
Author:
keihin
GeoGebra
New Resources
找出對稱軸
判斷球體
Earth with coastline
拼砌四邊形
兩組對邊相等和有直角的四邊形
Discover Resources
小數試用
行星運動
y=sinx+1,y=2sinx,y=sin2x的圖形
congruent triangle2_provided by Mr Yeung Kar Chun
面積趣味題
Discover Topics
Constructions
Numbers
Hypothesis Testing
Multiplication
Plane Figures or Shapes