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竞猜游戏：说出图中角的大小
Author:
张志勇
Topic:
Angles
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
小数 的副本
畫出對稱圖形
近似值：有效數字
四邉形 (四年級) 教師版
Discover Resources
數量與整體的相差百分率
Testing: addition
外接圓的心
廣義角的副本
Copy of 二次函數圖形
Discover Topics
Median Line
Unit Circle
Trigonometric Functions
Symmetry
Quadrilaterals