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旋轉對稱 Rotational symmetry
Author:
TANG TSZ YUEN
Topic:
Symmetry
GeoGebra
New Resources
找出對稱軸
兩位數加法
sanjiaohanshu
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
雙曲線之極偶 / polarity for hyperbola
拼貼
Volume of the Cuboid
圖形的繪製(8)---圖形的搬移(畢氏定理)
Trigonometric Ratios
Discover Topics
Pie Chart or Circle Chart
Multiplication
Hypothesis Testing
Kite
Angles