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congruent (SSS)
Author:
Ricky Chan
GeoGebra
New Resources
兩組對邊相等的四邊形
算柱 (兩位數)
四邉形 (四年級) 教師版
【案例】圆柱体内放置一个大球六个小球
找出對稱軸
Discover Resources
底圖為圓,縱切面為正方形
蜘蛛網製作
拋物線6--包絡線法
竞猜游戏:说出图中角的大小
勾股定理的毕氏证明
Discover Topics
Real Numbers
Multiplication
Division
Differential Calculus
Percentages