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选修一P108例2求线段中点轨迹
Author:
jjx01
Topic:
Circle
,
Conic Sections
,
Ellipse
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等的四邊形
畫出對稱圖形
兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
Discover Resources
釘點紙畫三角形
平行四邊形柱展開
How to draw a pentagon with ruler and compasses?
外心
探索“三等分点连线围成的小三角形”的特点
Discover Topics
Root
Tree Diagrams
Curve Sketching
Logic
Planes