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Author:
dunst kang
GeoGebra
New Resources
龙形曲线-分形龙
斐波那契螺旋弧线(表格法)
龙形曲线-分形龙2
第八周作业
平行線的判定
Discover Resources
semicircle
How to draw a square with ruler and compasses?
六邊形
相似三角形的一种动态构造.许兴华数学
一线三等角模型