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旋轉對稱 Rotational symmetry
Author:
TANG TSZ YUEN
Topic:
Symmetry
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
[問題] 行列式 = 0 的機率
正方形試算表
二進位翻牌
反演
杨辉三角形 Pascal Triangle
Discover Topics
Calculus
Correlation
Parallelogram
Trigonometry
Multiplication