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代數運算：外心座標
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
兩位數除以一位數（二）
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
柱體建築師
算柱 (兩位數)
Discover Resources
一般變換
圓錐的曲面面積
剪刀石頭布
橢圓1--四圓心近似法
学习 GeoGebra 课堂
Discover Topics
LCM and GCD
Intersection
Pie Chart or Circle Chart
Ratios
Pythagoras or Pythagorean Theorem