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Author:吳秉鴻

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兩組對邊相等的四邊形
近似值：有效數字
美國國旗 (Codex 版)
四邊形的特性
兩組對邊相等和有直角的四邊形

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moon1
lms2702
畢氏定理
将三角形面积一分为二
角的介紹 | Introduction to Angles

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Isosceles Triangles
Normal Distribution
Confidence Interval
Congruence
Quadrilaterals

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