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Rotational and reflectional symmetry of a regular polygon
Author:
Ngan Hok Hei
,
lamanleung
GeoGebra
New Resources
找出對稱軸
兩組對邊相等的四邊形
球体的体积推导（优化版）
兩位數加法
【案例】圆柱体内放置一个大球六个小球
Discover Resources
math 2-2
正弦函數y=sin(x)的泰勒級數
容積上升(立體、平面)
餘弦的定理
第三組-維維安尼定律
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Geometry
Geometric Transformations
Cube
Cosine
Limits