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congruent (AAA)
Author:
Ricky Chan
GeoGebra
New Resources
畫出對稱圖形
四邉形 (四年級) 教師版
兩位數加法
球體建築師
【案例】圆柱体内放置一个大球六个小球
Discover Resources
量度身高
端點在兩圓周線段中點軌跡
線性代數
Ｍy GGC-1
七巧板（tangram）的副本
Discover Topics
Geometry
Right Triangles
Algebra
Polygons
Geometric Transformations