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Author:
李春培
GeoGebra
New Resources
判斷球體
美國國旗 (Codex 版)
兩組對邊相等和有直角的四邊形
找出對稱軸
小数 的副本
Discover Resources
指數圖形的變化
Right Triangles in a Circle 圓內的直角三角形
Quiz on True Bearings 真方位角：測驗
多邊形的伸縮
mooc第四讲作业单晨
Discover Topics
Quadrilaterals
Square
Addition
Perimeter
Function Graph