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直線與平面的夾角
Author:
pingfeng.wu
GeoGebra
New Resources
幾何作圖題：切三圓（題目）
算柱 (兩位數)
三半圓間的相切圓(Codex╱2026.10.07)
美國國旗 (Claude 版)
美國國旗 (Codex, 2026.10.06)
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翻轉方塊(雙開)
mjnsl8ba, 數列級數圖形3
Copy of 固定面積的圖形的周界變化
十分逼近法及根號概念
Copy of 多边形外角和
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Parallelogram
Upper and Lower Sum or Riemann Sum
Rhombus
Triangles
Pyramid