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橢圓軌跡
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
兩位數加法
直角坐標平面上的旋轉變換
三位數除以一位數（二）
Discover Resources
Vertex Form of Quadratic Functions(2) 二次函數的圖像：頂點式(2)
quadrilaterals 4
圓與兩平行切線
三角形三邊長
放射狀旋轉圖形(2)
Discover Topics
Sequences and Series
Trigonometry
Parametric Curves
Logarithmic Functions
Quadratic Equations