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七年级数学下册 5.1.2 垂线练习（新版）新人教版(2)
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七年级数学下册 5.1.2 垂线练习（新版）新人教版(2)

ID：814064

大小：202240

页数：3页

时间：2022-02-22

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5.1.2垂线1、过点A作直线AB⊥a，垂足为A。2、过点B作直线BC⊥b，垂足为C。3、在同一平面内，过一点有且只有___条直线与已知直线垂直。4、如图1，P到直线AB的垂线段是____；从P点出发的所有线段中，最短的是______5、连接直线外一点与直线上各点的所有线段中，_____________6、如图2，CD是直角三角形中ABC中斜边AB上的高，那么,（1）点A到BC边的距离是线段_______的长度；（2）点B到AC边的距离是线段_______的长度；（3）点C到AB边的距离是线段_______的长度；图4图37、如图3，直线AB、CD相交于点O，OE⊥AB，O为垂足，如果∠EOD＝38°，则∠AOC＝______，∠COB＝______。8、如图4，AC⊥BC于点C，CD⊥AB于点D，能表示点到直线(或线段)的距离的线段有()．A、3条B、4条C、5条D、6条9、如图5，若AO⊥CO，BO⊥DO，且∠BOC＝α，则∠AOD等于()A、180°－2αB、180°－αC、D、2α－90°10、如图6，点P为直线m外一点，点P到直线m上的三点A、B、C的距离分别为PA＝4cm，PB＝6cm，PC＝3cm，则点P到直线m的距离为()图6图5A、3cmB、小于3cmC、不大于3cmD、以上结论都不对11、两点之间的距离是指（） A、连接两点之间的线；B、连接两点之间的线的长度C、连接两点之间的线段；D、连接两点之间的线段的长度12、如下图，已知∠AOB及点P，分别画出点P到射线OA、OB的垂线段。13、如图，小明从A村到B村去取鱼虫，将鱼虫放到河里，请作出小明经过的最短路线．14、如下图，直线AB、CD相交于点O，OA平分∠EOC，且∠EOC=70°，求∠BOD的度数.15、已知直线AB与CD相交于O，EO⊥AB于点O，FO⊥CD于点O，且∠BOF=50°，求∠EOD的度数。16、如图，OA⊥OC于O，OB⊥OD于O，且∠AOD=3∠BOC，求∠BOC的度数
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