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银币
Author:
luodeqin@keleshuxue.com
GeoGebra
New Resources
活动三:应用性质
斐波那契螺旋弧线(表格法)
平行線的判定
正方形雪花图案
球体的截面
Discover Resources
鏡射
四邊形的「等角分點」
內切圓滾動有圖更新
Is this a prism 1
Locus (Two points 1)
Discover Topics
Perimeter
Cosine
Equilateral Triangles
Secant Line or Secant
Diagrams