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固定三角形的條件−題2的副本

Author:hange, Anthony OR 柯志明

柯志明香港教育局

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兩組對邊相等和有直角的四邊形
判斷球體
兩組對邊相等的四邊形
AI 訓練教室
四邊形的特性

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數學模型
anlge at centre twice angle at circumference
龜甲
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