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旋轉對稱 Rotational symmetry
Author:
TANG TSZ YUEN
Topic:
Symmetry
GeoGebra
New Resources
錐體建築師
画直线等分三角形的面积
三位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
異分母分數減法
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上圓下方的盒子
concurrence of medians and bimedians of tetrahedron
讀量杯上的刻度
閱讀月曆（綜合版）
羊角螺线[Euler spiral】
Discover Topics
Frequency Distribution
Cube
Root
Trapezium
Geometric Transformations