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20150418_5semicircles
Author:
Shun-Sheng Su
五個半圓的平移、旋轉變換
GeoGebra
New Resources
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
柱體建築師
画直线等分三角形的面积
兩位數除以一位數（一）
Discover Resources
黃金三角形
seq,tra
襯墊
示例2
三角形的內心
Discover Topics
Circle
Circumcircle or Circumscribed Circle
Geometric Mean
Division
Sphere