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Author:黃斌

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Earth with coastline
美國國旗 (Codex 版)
Fibonacci Clock
三半圓間的相切圓(Codex╱2026.10.07)
sanjiaohanshu

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Prism and Cylinder 1
異分母分數加法
DSE Circle-ACT02B Angle at centre and circumference
网板第60期第2题
鉛筆畫圓

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Geometry
Cone
Distributions
Trigonometric Functions
Difference and Slope

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