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Congruent (SSS) 5
Author:
Ricky Chan
GeoGebra
New Resources
算柱 (兩位數)
画直线等分三角形的面积
兩位數除以一位數（二）
直角坐標平面上的旋轉變換
判斷球體
Discover Resources
分段移動
伸展收縮變換
trigonometry3
猴兄爬樹
第一次尝试
Discover Topics
Rhombus
Difference and Slope
Ellipse
Median Value
Rectangle