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proj geom 1
Author:
luk036
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
盈利與虧蝕
圓的切線方程
常见四边形是否是双心四边形
双心四边形
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二次函數的圖形
認識函數值
Trapezium fixed height
正四面體變菱形12面體
点阵
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Linear Programming or Linear Optimization
Matrices
Cosine
Mode
Linear Functions