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圓的外切圓
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
註：全華第三冊習題 1-1 進階題第 2 題 (107/09)
New Resources
祖冲之的期望：内棋与外棋
第八周作业
圓的切線方程
空间中两直线的位置关系
斜率的值
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AREA
軌跡三︰移動點與一固定線段保持固定距離(運動場跑道)
環環相扣
f(x, y) = g(x) h(y)
诱导公式五（90°+α）
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Linear Regression
Percentages
Orthocenter
Means
Fractal Geometry