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平移旋轉
Author:
chen mingchuan
GeoGebra
New Resources
異分母分數減法
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
兩位數加法
Discover Resources
過圓內一點最短弦
研習講義
動畫
Copy of 劉徽的「割圓術」
作三角形
Discover Topics
Equations
Optimization Problems
Derivative
Linear Regression
Linear Equations