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多边形绕圆滚动
Author:
朱亮
GeoGebra
New Resources
四邉形 (四年級) 教師版
算柱 (兩位數)
GeoGebra笔记功能体验课件
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
Discover Resources
雙曲線語橢圓
「相似三角形」任务1
test
Angles in a Circle:Property 2
单位圆与正弦函数
Discover Topics
Random Variables
Tangent Line or Tangent
Special Points
Solids or 3D Shapes
Linear Equations