(贵阳专用)2019中考数学总复习第1部分教材同步复习第四章三角形课时16等腰三角形与直角三角形真题精练.doc

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(贵阳专用)2019中考数学总复习第1部分教材同步复习第四章三角形课时16等腰三角形与直角三角形真题精练.doc_第1页
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1第一部分 第四章 课时 16命题点 等腰三角形的性质与判定1(2016贵阳)已知 ABC, BAC45, AB8,要使满足条件的 ABC 唯一确定,那么 BC 边长度 x 的取值范围为_ x4 或 x8_.22(2014贵阳)如图,在 Rt ABC 中, BAC90, AB AC16 cm, AD 为 BC 边上的高动点 P 从点 A 出发,沿 A D 方向以 cm/s 的速度向点 D 运动设 ABP 的面积为2S1,矩形 PDFE 的面积为 S2,运动时间为 t s(0 t8),则 t_6_s 时, S12 S2.

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