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直线倾斜角与斜率
Author:
郑飞宇
倾斜角的变化与斜率的变化关系
GeoGebra
New Resources
平行線的斜率
垂直線的斜率
漂亮的摇摆曲线
圓的切線方程
球体的体积推导（优化版）
Discover Resources
固定三角形的條件−題6
三角形探究1
面積3轉正三角形
圖形的周界
congruent triangle2_provided by Mr Yeung Kar Chun
Discover Topics
Area
Subtraction
Prism
Variance
Rational Numbers