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单位圆画三角函数图像
Author:
梁航宇
GeoGebra
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幾何作圖題：切三圓（題目）
Fibonacci Clock
三半圓間的相切圓(Codex╱2026.10.07)
近似值：有效數字
Nested spiral octagon
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大邊對大角
y=a(x-h)²+k
直線排列1
角的大小與角兩臂的長度有關？
三角函數 週期、振幅變化
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Median Line
Linear Programming or Linear Optimization
Unit Circle
Logic
Cylinder