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Rotational and reflectional symmetry of a regular polygon
Author:
Ngan Hok Hei
,
lamanleung
GeoGebra
New Resources
拼砌四邊形
兩位數除以一位數（一）
【案例】2013年安徽高考15题
柱體建築師
三位數除以一位數（一）
Discover Resources
不規則填色
DSE Circle-ACT03B Relationship Between Chords and Angles at Centre
Golden Ratio (phi) Collection
PMC 2018-19
仿生狗案例
Discover Topics
Upper and Lower Sum or Riemann Sum
Natural Numbers
Ellipse
Prism
Arithmetic Mean