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Congruent (SSS) 3
Author:
Ricky Chan
GeoGebra
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幾何作圖題：切三圓（題目）
直角坐標平面上的旋轉變換
世界平面地圖 (Codex╱2026.10.07)
算柱 (兩位數)
湖南省张毅郴数字教研工作室 logo
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Apollonius Problem 7 CCP Inversion simple 34
層層套疊的四邊形
Orthographic Views 1
周长相等，正方形，长方形和正三角形，圆面积大小比较
S8G5 增加的小方格
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Pythagoras or Pythagorean Theorem
Perimeter
Dilation
Rhombus
Tree Diagrams