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三角形ㄛ
Author:
jolin219984
內心、重心、外心、垂心
GeoGebra
嗯
New Resources
兩位數加法
拼砌四邊形
球體建築師
兩位數除以一位數（一）
第八周作业
Discover Resources
Sequence指令練習(逐一套疊正方形)
重複
Completing the square(配方法)
椭圆的一种画法.许兴华数学
"拈" 類遊戲之一-搶21遊戲 The 21 game
Discover Topics
Limits
Quadratic Functions
Surface
Equilateral Triangles
Centroid or Barycenter