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浙教版七年级上《第6章图形的初步知识》单元测试含答案
浙教版七年级上《第6章图形的初步知识》单元测试含答案

第6章图形的初步知识

一、选择题(每小题4分,共32分)

1.下列图形中,属于棱柱的是( )

图6-Z-1

2.图6-Z-2中,线段的条数是( )

图6-Z-2

A.3 B.4 C.5 D.6

3.在下列日常生活操作中,体现“两点之间线段最短”的是( )

A.用两根钉子固定一根木条

B.两根木桩拉一直线把树栽成一排

C.把弯路改直可以缩短路程

D.沿桌子的一边看,将桌子排齐

4.如图6-Z-3,∠AOD=86°,∠AOB=20°,OB平分∠AOC,则∠COD的度数是( )

图6-Z-3

A.46° B.43°

C.40° D.33°

5.已知:如图6-Z-4,∠AOB=∠COD=90°,则∠1与∠2的关系是( )

图6-Z -4

A .互余

B .互补

C .相等

D .无法确定 6.线段AB =12 cm ,点C 在线段AB 上,且AC =13

BC ,M 是BC 的中点,则AM 的长为( ) A .4.5 cm B .6.5 cm

C .7.5 cm

D .8 cm

7.上午9时,时钟的时针和分针成直角,那么下一次时针和分针成直角的时间是( )

A .9时35分

B .10时5分

C .9时35511分

D .9时32811

分 8.如图6-Z -5,数轴上M ,N ,P ,Q 四点对应的数都是整数,且M 为线段NQ 的中点,P 为线段NM 的中点.若点M 对应的整数是a ,点N 对应的整数是b ,且b -2a =0,则数轴上的原点是( )

图6-Z -5

A .点M

B .点N

C .点P

D .点Q

二、填空题(每小题4分,共24分)

9.120°=________周角,34

平角=________度,32.24°=32°________′________″.

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