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鉛筆畫圓
Author:
Ching-Hui Chou
GeoGebra
New Resources
異分母分數減法
找出對稱軸
兩位數加法
画直线等分三角形的面积
兩位數除以一位數（一）
Discover Resources
下和與上和
三角函數的疊合
三角形內心
Quiz on Solving Quadratic Inequalities 解二次不等式：測驗 (v2018)
test
Discover Topics
Parabola
Set Theory
Division
Dilation
Histogram