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spinral

Author:劉瓊如

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Nested spiral octagon
Earth with coastline
算柱 (兩位數)
幾何作圖題：切三圓（題目）
三半圓間的相切圓(Codex╱2026.10.07)

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waaachen
特殊線.ggb
纏繞畫
justin sin
方格紙上畫正方形 2

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Arithmetic
Solids or 3D Shapes
LCM and GCD
Optimization Problems
Exponent

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