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Author:
WU CHUNG WEI
GeoGebra
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四邊形的特性
Nested spiral octagon
Fibonacci Clock
幾何作圖題：切三圓（題目）
三半圓間的相切圓(Codex╱2026.10.07)
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棋聖加油
垂線性質2
幾何_圓2
题1
y=ax^2性質
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Derivative
Surface
Ellipse
Plane Figures or Shapes
Sequences and Series