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20161223 第5題
Author:
3A516057 練鴻裕
GeoGebra
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sanjiaohanshu
美國國旗 (Codex, 2026.10.06)
中華民國國旗 (Codex╱2026.10.06)
美國國旗 (Codex 版)
幾何作圖題：切三圓（題目）
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可變大的圓桌
Helicoid
angles sum on a striaght line
光的折射
二面角
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Upper and Lower Sum or Riemann Sum
Distributions
Addition
Statistical Characteristics
Root