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優良作品4(昀潔)
Author:
Ching-Hui Chou
GeoGebra
New Resources
直角坐標平面上的旋轉變換
拼砌四邊形
算柱 (兩位數)
兩組對邊相等的四邊形
美國國旗 (Codex 版)
Discover Resources
Quadratic Equation
扇形面積
正切函數值的變化
面積2
賺賠：例3的副本
Discover Topics
Multiplication
Rhombus
Similarity Transformation or Similarity
Difference and Slope
Trigonometry