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20190530 與平行線有關的角
Author:
Hui Sir
GeoGebra
New Resources
判斷球體
GeoGebra笔记功能体验课件
兩位數加法
四邊形的特性
【案例】2018年全国1卷理科12题
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三角函數
切割線性質
Test
GGB 1104 EX01
勾股定理（几何原本）的副本
Discover Topics
Orthocenter
Tangent Function
Similar Triangles
Scatter Plot
Frequency Distribution