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任务10：黄金螺线与向日葵
Author:
陈丽婷
GeoGebra
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龙形曲线-分形龙
盈利與虧蝕
常见四边形是否是双心四边形
折扣
撒针估算面积实验
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七巧板綜合
三角形外角和為360度
尺規作圖乾淨版
畢式定理 (13)
Midpoint Theorem and Intercept Theorem
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Integral Calculus
Subtraction
Perimeter
Inequalities
Derivative