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三角形外心
Author:
李春培
三角形外心
GeoGebra
New Resources
拼砌四邊形
找出對稱軸
兩組對邊相等和有直角的四邊形
異分母分數減法
GeoGebra笔记功能体验课件
Discover Resources
橢圓尺規作圖Ex01
不規則區域著色
長方形面積法 _單項式乘法
轨迹最值问题
比一比看谁小
Discover Topics
Plane Figures or Shapes
Congruence
Ratios
Vectors
Linear Functions