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三個圓上的正三角形
Author:
蘇鈺婷
GeoGebra
New Resources
美國國旗 (Codex, 2026.10.06)
sanjiaohanshu
國旗 (作圖步驟直接餵給 Claude)
中華民國國旗 (Codex╱2026.10.06)
伊朗國旗 (Codex╱2026.10.07)
Discover Resources
史坦納圓鍊 (Steiner Chain)
複合圖形(二)
托勒密定理的應用
包含除法（整數÷整數）
-1 ≤ cosA cosB cosC ≤ 1/8
Discover Topics
Piecewise Functions
Logarithm
Square
Arithmetic Mean
Matrices