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斐波那契兔子(最后一行均匀排列)
Author:
赵林
GeoGebra
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美國國旗 (Codex 版)
Nested spiral octagon
三半圓間的相切圓(Codex╱2026.10.07)
幾何作圖題：切三圓（題目）
直角坐標平面上的旋轉變換
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微積分
四心的變化II
Mearm2
sin,cos
正方体、正四面体的外接球
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Statistics
Calculus
Orthocenter
Logic
Trigonometry