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反射定律 Law of Reflection
Author:
W.L. Wong, Albert
GeoGebra
New Resources
算柱 (兩位數)
畫出對稱圖形
画直线等分三角形的面积
錐體建築師
四邉形 (四年級) 教師版
Discover Resources
畢式定理 (12)
基測會考數學
Triangle on sphere
正12面體內的正四面體製作
Modular Surface：1 / (1 + z²)
Discover Topics
Trapezoid
Standard Deviation
Linear Regression
Combinatorics
Right Triangles