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3-1 切線二次函數
Author:
謝向倫
GeoGebra
New Resources
柱體建築師
異分母分數減法
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
球体的体积推导（优化版）
Discover Resources
認識GeoGebra--相似三角形
Ruler
day01_01
反射(鉛垂線、水平線及斜線) Reflection (vertical line, horizontal line and line)
Congruent Triangle (SSS)
Discover Topics
Quadratic Equations
Parametric Curves
Functions
Polynomial Functions
Arithmetic Mean