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congruent (SSS) 2
Author:
Ricky Chan
GeoGebra
New Resources
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
錐體建築師
兩位數除以一位數（一）
GeoGebra笔记功能体验课件
Discover Resources
學資p.13第8題
夜市麻將模擬機2
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
極座標雷達
面積比化為向量比
Discover Topics
Tree Diagrams
Pythagoras or Pythagorean Theorem
Boxplot
Planes
Confidence Interval