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任务10：黄金螺线与向日葵
Author:
陈丽婷
GeoGebra
New Resources
算柱 (兩位數)
美國國旗 (Codex 版)
找出對稱軸
Earth with coastline
第八周作业
Discover Resources
Symetry
商高定理2
相同圖形的拼砌（有兩組平行線的四邊形）
立體圖
Copy of 劉徽的「割圓術」
Discover Topics
Area
Natural Numbers
Distributions
Frequency Distribution
Circle