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8-8-1三角形的心(4心)
Author:
pingfeng.wu
GeoGebra
New Resources
兩位數加法
球體建築師
判斷球體
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
雙曲線尺規作圖01
Simple Interest 單利息
圓錐曲線
bang
拼出三角形的副本
Discover Topics
Rotation
Similarity Transformation or Similarity
Integers
Means
Sphere