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蒙日定理
Author:
孟宝兴
蒙日定理
GeoGebra
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Nested spiral octagon
幾何作圖題:切三圓(題目)
算柱 (兩位數)
長方體平面投影 (Codex版)
伊朗國旗 (Codex╱2026.10.07)
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Square pyramid
面積和體積
[問題] 以橢圓焦點為中心的正方形
旋轉長方形
sin(x) 的函數圖形的副本
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Cuboid
Root
Straight Lines
Quadrilaterals
Surface