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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