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畫鐘面
Author:
GeoGebra Institute of Hong Kong
GeoGebra
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直線的斜率
双心四边形
斜率的值
直線的斜率：水平變化 & 鉛垂變化
百分數及其應用
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相似形
Copy of 圓方程 (標準式與一般式)
三角形的心
同旁內角---垂直平行綫
旋轉圓弧
Discover Topics
Cone
Linear Programming or Linear Optimization
Integral Calculus
Piecewise Functions
Square