河南省2019年中考数学总复习第四章三角形第一节线段、角、相交线与平行线好题随堂演练.doc

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1、1线段、角、相交线与平行线好题随堂演练1(2018怀化)下列命题是真命题的是( )A两直线平行,同位角相等B相似三角形的面积比等于相似比C菱形的对角线相等D相等的两个角是对顶角2(2018邵阳)如图,直线 AB,CD 相交于点 O,已知AOD160,则BOC 的大小为( )A20 B60C70 D1603(2018益阳)如图,直线 AB,CD 相交于点 O,EOCD.下列说法错误的是( )AAODBOC BAOEBOD90CAOCAOE DAODBOD1804(2018广州)如图,直线 AD,BE 被直线 BF 和 AC 所截,则1 的同位角和5 的内错角分别是( )A4,2 B2,6C5,4

2、 D2,45(2018滨州)如图,直线 ABCD,则下列结论正确的是( )2A12 B34C13180 D341806(2018绵阳)如图,有一块含有 30角的直角三角板的两个顶点放在直尺的对边上.如果244,那么1 的度数是( )A14 B15 C16 D17 7(2018沈阳)如图,ABCD,EFGH,160,则2 补角的度数是( )A60 B100 C110 D1208(2018平顶山一模)如图,BEAF,点 D 是 AB 上一点,且 DCBE 于点 C,若A35,则ADC 的度数( )A105 B115 C125 D1359(2018黔南州)35,则 的补角为_度.10. 如图,若12180,3110,则4_.11. (2018益阳)如图,ABCD,12,求证:AMCN. 3参考答案1A 2.D 3.C 4.B 5.D 6.C 7.D 8.C 9.145 10.11011证明:ABCD,EABECD,12,EAMECN,AMCN.

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