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同心圓
Author:
賴詩唐
GeoGebra
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中華民國國旗 (Codex╱2026.10.06)
近似值：有效數字
找出對稱軸
Fibonacci Clock
伊朗國旗 (Codex╱2026.10.07)
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四角錐體的截面
圓形墊圈 (Washer) 2
Perimeter
龜甲
動態幾何錯覺
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Circle
Quadratic Functions
General Quadrilateral
Statistics
Combinatorics