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2019中考数学一轮复习第一部分教材同步复习第四章三角形第17讲等腰三角形与直角三角形权威预测.doc

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2019中考数学一轮复习第一部分教材同步复习第四章三角形第17讲等腰三角形与直角三角形权威预测.doc_第1页
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1第一部分 第四章 第 17 讲1如图，在 ABC 中， C90， AC6， BC8.以点 A 为圆心， AC 长为半径作圆弧交边 AB 于点 D，则 BD 的长为_4_.2如图，在 ABC 中， AB AC，边 AB 的垂直平分线 MN 交 AC 于点 D 若 BCD 的周长为 24 cm， BC10 cm，则 AB 的长为_14_ cm.

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