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GeoGebra Lesson
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Author:
Ng Ching Yi
GeoGebra
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中華民國國旗 (Codex╱2026.10.06)
sanjiaohanshu
美國國旗 (Claude 版)
Nested spiral octagon
Earth with coastline
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點到直線距離4：同心圓擴大
相似三角形證明
Ambiguous Cone
BEES定理2
全等双子模型（等腰三角形）
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Quadrilaterals
Pyramid
Mode
Poisson Distribution
Translation