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正切函数图像
Author:
吕胜
GeoGebra
New Resources
直角坐標平面上的旋轉變換
兩位數除以一位數（一）
異分母分數減法
畫出對稱圖形
【案例】2018年全国1卷理科12题
Discover Resources
方格紙上畫長方形1
Triangle
凸透镜成像
三角形的內角和+內心與外心
罩杯公式
Discover Topics
Variance
Expected Value
Vectors 2D (Two-Dimensional)
Trapezoid
Difference and Slope