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GeoGebra
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congruent (SA)
Author:
Ricky Chan
GeoGebra
New Resources
判斷球體
找出對稱軸
拼砌四邊形
兩組對邊相等和有直角的四邊形
異分母分數減法
Discover Resources
製作組織圖
鏡射
平面方程式與法向量
光的折射（光线自右下向左上）
Dart Board
Discover Topics
Rhombus
Plane Figures or Shapes
Poisson Distribution
Histogram
Surface