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三角形三內角和
Author:
洪得祥
GeoGebra
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三半圓間的相切圓(Codex╱2026.10.07)
畫出對稱圖形
sanjiaohanshu
Fibonacci Clock
Claude 解幾何題
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正三角形尺规作图
三角形的內角和＝180度
Building Cones 建造圓錐體
周界
螢橋國中 周孟承
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Numbers
Scalene Triangles
Surface
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