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20190530 與平行線有關的角
Author:
Hui Sir
GeoGebra
New Resources
【案例】2013年安徽高考15题
畫出對稱圖形
画直线等分三角形的面积
柱體建築師
判斷球體
Discover Resources
中點軌跡
三角函數圖形（全）
Exploration task
六个常见超越函数图像
平面鏡多次成像_for_mobile
Discover Topics
Histogram
Arithmetic Operations
Quadratic Functions
Logic
Combinatorics