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初中数学七年级上册(581题)


如图,\(\angle AOB = \angle COD = 90^\circ \)\(OA\)平分\(\angle COE\)\(\angle BOD = n^\circ (0 < n < 45)\)


\(\angle DOE\)的度数(用含\(n\)的代数式表示);



知识点:第四章 几何图形初步


参考答案:\(\angle DOE = (90 - 2n)^\circ \)

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