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同心圓

Author:賴詩唐

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畫出對稱圖形
伊朗國旗 (Codex╱2026.10.07)
幾何作圖題：切三圓（題目）
三半圓間的相切圓(Codex╱2026.10.07)
小数的副本

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工具箱
P4 分數基礎
類正五邊形摺法
正方體一筆畫
兩位數除三位數(商=10)

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Area
Plane Figures or Shapes
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Tree Diagrams
Right Triangles

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