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折射率的定義
Author:
Jia-ming Shiu
可以移動G、E、F 看出折射率的算法
GeoGebra
New Resources
画直线等分三角形的面积
畫出對稱圖形
四邉形 (四年級) 教師版
判斷球體
兩組對邊相等和有直角的四邊形
Discover Resources
九點圓的真正面貌
西姆松定理推廣(西姆松圓)
congruent activity
gjc097b21 點對三角形的對稱
Copy of 折扣 例5
Discover Topics
Curve Sketching
Optimization Problems
Parametric Curves
Arithmetic
Fractions