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三角形兩邊內接相似平行四邊形
Author:
Gideon Huang
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩位數除以一位數（二）
錐體建築師
異分母分數減法
【案例】2013年安徽高考15题
Discover Resources
用兩圓編織美麗的曲面
正方形轉轉
直線上的鄰角_1
square & Triangle
Golden Ratio (phi) Collection
Discover Topics
Arithmetic
Right Triangles
Parallelogram
Straight Lines
Equilateral Triangles