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角的大小與角兩臂的長度有關？
Author:
cwc
GeoGebra
New Resources
兩組對邊相等的四邊形
第八周作业
【案例】2013年安徽高考15题
GeoGebra笔记功能体验课件
判斷球體
Discover Resources
圓圓求切圓
Circumference 圓周
證平行四邊形 (對邊相等)
相似三角形
正方形的邊長和周界
Discover Topics
Constructions
Binomial Distribution
Special Points
Means
Arithmetic Operations