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杯子反射光線(包絡)
Author:
陳柄何
Topic:
Curve Sketching
GeoGebra
New Resources
畫出對稱圖形
算柱 (兩位數)
Fibonacci Clock
近似值：有效數字
Nested spiral octagon
Discover Resources
龍騰4_1-1講進5
example 1_sun
畢氏定理
包含除法（整數或分數 ÷ 分數）的副本
雙曲線軌跡
Discover Topics
Vectors 3D (Three-Dimensional)
Rational Numbers
Triangles
Mathematics
Fractions