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congruent (AAA)
Author:
Ricky Chan
GeoGebra
New Resources
兩位數除以一位數（二）
兩位數加法
畫出對稱圖形
算柱 (兩位數)
四邉形 (四年級) 教師版
Discover Resources
Dividing in a Ratio 按比分物
外公切線段長求法
裝飾用
rose
旋轉圓弧
Discover Topics
Similar Triangles
Orthocenter
Parallelogram
Exponent
Similarity Transformation or Similarity