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Ex.3
Author:
johnmayhk
GeoGebra
New Resources
Earth with coastline
三半圓間的相切圓(Codex╱2026.10.07)
近似值：有效數字
美國國旗 (Codex 版)
中華民國國旗 (Codex╱2026.10.06)
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題5
Apollonius Problem 5 CPP Power
cos(π/n)cos(2π/n)cos(3π/n) ... cos(nπ/n) = ?
诱导公式六（90°-α）
分数应用题——巧分烧饼
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Optimization Problems
Terms
Quadrilaterals
Plane Figures or Shapes
Dilation