2016年人教新版七年级数学上册同步测试:4.3 角

适用年级:初一
试卷号:174597

试卷类型:课时练习
试卷考试时间:2017/11/19

1.单选题(共12题)

1.
已知∠A=40°,则它的余角为(  )
A.40°B.50°C.130°D.140°
2.
若∠A=34°,则∠A的补角为(  )
A.56°B.146°C.156°D.166°
3.
下列各图中,∠1与∠2互为余角的是(  )
A.B.C.D.
4.
下面角的图示中,能与30°角互补的是(  )
A.B.C.D.
5.
如图,OAOB,若∠1=55°,则∠2的度数是(    )
A.35°B.40°C.45°D.60°
6.
如图,点O在直线AB上,射线OC平分∠DOB.若∠COB=35°,则∠AOD等于(    ).
A.35°B.70°
C.110°D.145°
7.
已知∠α=35°,那么∠α的余角等于(  )
A.35°B.55°C.65°D.145°
8.
如图,在△ABC中,∠C=90°,点D,E分别在边AC,AB上.若∠B=∠ADE,则下列结论正确的是(  )
A.∠A和∠B互为补角B.∠B和∠ADE互为补角
C.∠A和∠ADE互为余角D.∠AED和∠DEB互为余角
9.
P位于岛Q的正西方,由岛PQ分别测得船R位于南偏东30°和南偏西45°方向上.符合条件的示意图是
A.B.C.D.
10.
一个角的余角是这个角的补角的,则这个角的度数是(  )
A.30°B.45°C.60°D.70°
11.
如图,OA⊥OB,∠1=35°,则∠2的度数是(  )
A.35°B.45°C.55°D.70°
12.
如果α与β互为余角,则(  )
A.α+β=180°B.α﹣β=180°C.α﹣β=90°D.α+β=90°

2.选择题(共3题)

13.任务型阅读

    When home is far away, the sense of ease and belonging that so many people feel can transform into painful feelings of longing, commonly known as homesickness. Along with feelings of insecurity, loss of control and nervousness, physical effects, including sleep issues, tiredness and loss of appetite, are also caused by homesickness.{#blank#}1{#/blank#}Check them out below:

    Realize that feeling homesick is 100 percent normal.

    Almost everyone experiences homesickness when moving to a new place—some people might just be better at hiding it.{#blank#}2{#/blank#}Homesickness is a normal and evolutionarily healthy reaction.

    Make connections with new people in comfortable settings.

    Feeling homesick when separated from loved ones motivates people to be with those supportive people.{#blank#}3{#/blank#} When making new connections, it's best to stick to the style that works for you in order to ease homesickness.

    {#blank#}4{#/blank#}

    This point is vital and also one of the hardest to accomplish. Self-compassion is loving yourself just as you love the ones you care about. The most important step in practicing self-compassion is substituting negative, critical and, sometimes, automatic thoughts about yourself with thoughts that are more supportive and kind.

    Keep tabs on your negativity.

    It's also useful to ask yourself how much of your homesickness is due to an event, such as being separated from loved ones, and how much is from how you're understanding a situation.{#blank#}5{#/blank#}A positive outlook on a situation can do wonders for your mood, but it often can be hard to practice. You can silence negative thoughts in many ways, including reciting positive mantras(祷文), keeping a journal or even taking a walk in a park.

    If you're dealing with feelings of homesickness, remember you're not alone. Even though there's no place like home, give yourself some time and care, and you might find yourself falling in love with a new place.

A. Learn to help others.

B. Practice self-compassion.

C. Being homesick is abnormal.

D. Being homesick is not a sign of personal shortcoming.

E. We gathered a few psychologist-backed tips to help ease homesickness.

F. Taking a step back is recommended, instead of falling into the trap of a negative outlook.

G. But keep in mind that everyone is different when it comes to forming those new relationships.

14.选出不同类的单词(   )
15.Mr. Wang will come back from Guangzhou ________.

3.填空题(共10题)

16.
2700″=______°.
17.
如图,把一张长方形纸片ABCD沿EF折叠,点C、D分别落在点C′、D′的位置上,EC交AD于G,已知∠EFG=56°,那么∠BEG=______.
18.
若∠A=30°,则∠A的补角是______.
19.
已知∠A=43°,则∠A的补角等于______度.
20.
计算:50°﹣15°30′=______.
21.
把15°30′化成度的形式,则15°30′=______度.
22.
一副三角板如图所示放置,则∠AOB=______°.
23.
已知∠α=13°,则∠α的余角大小是______.
24.
如图,将矩形纸片ABCD折叠,使边AB、CB均落在对角线BD上,得折痕BE、BF,则∠EBF=_____°.
25.
将矩形ABCD沿AE折叠,得到如图的图形.已知∠CEB′=50°,则∠AEB′=
试卷分析
  • 【1】题量占比

    单选题:(12道)

    选择题:(3道)

    填空题:(10道)

  • 【2】:难度分析

    1星难题:0

    2星难题:0

    3星难题:0

    4星难题:0

    5星难题:0

    6星难题:0

    7星难题:0

    8星难题:11

    9星难题:11