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illumination
Author:
北
GeoGebra
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比較五件物件的重量
第八周作业
斐波那契螺旋弧线（表格法）
百分數及其應用
第八周作业2
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七巧板(底板)_李樂雯
托勒密定理
cos(π/n)cos(2π/n)cos(3π/n) ... cos(nπ/n) = ?
練習_對稱
Solve ax + b = cx + d
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Inequalities
Trigonometry
Parabola
Geometric Transformations
Functions