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huang910316
GeoGebra
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斐波那契螺旋弧线(表格法-可动态调节)
正方形雪花图案
撒针估算面积实验
龙形曲线-分形龙
平行線的判定
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proof SSS
三角形的面積
學資p.13第7題
(003)80102史巧薇
三角函數名稱的由來
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Real Numbers
Sequences and Series
Geometry
Trigonometric Functions
Planes