浙江省2019年中考数学复习第四章几何初步与三角形第一节线段、角、相交线与平行线课前诊断测试.doc

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1、1线段、角、相交线与平行线课前诊断测试1(2018甘肃白银中考)若一个角为 65,则它的补角的度数为( )A25 B35C115 D1252(2018山东滨州中考)如图,直线 ABCD,则下列结论正确的是( )A12 B34C13180 D341803(2018山东德州中考)如图,将一副三角尺按不同的位置摆放,下列摆放方式中 与 互余的是( )A图 B图C图 D图4两条平行线之间的距离处处_. 5图中是对顶角量角器,用它测量角的原理是_. 26. (2018湖南岳阳中考)如图,直线 ab,160, 240,则3_7(2017山东德州中考)如图是利用直尺和三角板过已知直线 l 外一点 P 作直线

2、 l 的平行线的方法,其理由是_8如图是小凡同学在体育课上跳远后留下的脚印,他的跳远成绩是线段_的长度,这样测量的依据是_. 9(2018内蒙古通辽中考)如图,AOB 的一边 OA 为平面镜,AOB3745,在 OB 边上有一点 E,从点 E 射出一束光线经平面镜反射后,反射光线 DC 恰好与 OB 平行,则DEB 的度数是_10如图所示,1 条直线将平面分成 2 个部分,2 条直线最多可将平面分成 4 个部分,3 条直线最多可将平面分成 7 个部分,4 条直线最多可将平面分成 11 个部分现有 n 条直线最多可将平面分成 56 个部分,则 n 的值为_3参考答案1C 2.D 3.A 4.相等 5.对顶角相等 6.80 7.同位角相等,两直线平行8BN 垂线段最短97530(或 75.5) 10.10

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