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圓的介紹
Author:
簡士峻
GeoGebra
New Resources
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
拼砌四邊形
算柱 (兩位數)
画直线等分三角形的面积
Discover Resources
Quiz on Angles associated with Parallel Lines 平行線上的角：測驗
常用等价无穷小示意图
立體圖
錯角---不平行綫
GeoGebra 检测教程
Discover Topics
Median Line
Rectangle
Cone
Logarithm
Straight Lines