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waaachen
Author:
陳兪宏
吳孟哲老師幾何題
GeoGebra
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垂直線的斜率
双心四边形
圓周公式的應用
科氏力 (Coriolis Force)
祖冲之的期望：内棋与外棋
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proof SSS
I am superman
Error (誤差)
圓的基本性質
兩函數間面積的副本
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Correlation
Logarithmic Functions
Bar Chart or Bar Graph
Algebra
Arithmetic