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三角形中特殊的線
Author:
+x sir
Topic:
Triangles
GeoGebra
New Resources
四邊形的特性
兩組對邊相等的四邊形
異分母分數減法
找出對稱軸
【案例】2018年全国1卷理科12题
Discover Resources
正方體的反射對稱2
證平行四邊形 (對角線互相平分) (對邊 // 且相等)
GeoGebra与数学教育论坛通知
對稱圖形
八個方向
Discover Topics
Arithmetic
Functions
Curve Sketching
Scalene Triangles
Set Theory