0775《中学几何研究》21春西南大学在线作业题目及答案
0775 中学几何研究1.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602766839218006455.png" title="202010151602766839218006455.png" alt="图片.png"/>
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A.不能判断
B.AD
C.AE
D.AF
2.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602751351161017795.png" title="202010151602751351161017795.png" alt="图片.png"/>
A.A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602751441616053478.png" title="202010151602751441616053478.png" alt="图片.png"/>
B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602751422881017009.png" title="202010151602751422881017009.png" alt="图片.png"/>
C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602751459055070864.png" title="202010151602751459055070864.png" alt="图片.png"/>
D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602751396471054688.png" title="202010151602751396471054688.png" alt="图片.png"/>
3.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321043812098346.png" title="202010101602321043812098346.png" alt="图片.png"/>
A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321091646078893.png" title="202010101602321091646078893.png" alt="图片.png"/>
B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321126812020720.png" title="202010101602321126812020720.png" alt="图片.png"/>
C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321107934092940.png" title="202010101602321107934092940.png" alt="图片.png"/>
D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603504681320047810.png" title="202010241603504681320047810.png" alt="图片.png"/>
4.[单选题] 一点在已知三角形三边所在直线上的射影共线，其该点的轨迹是（ ）。
A.圆
B.直线
C.不确定
D.线段
5.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602766329677042599.png" title="202010151602766329677042599.png" alt="图片.png"/>
A.AP
B.AC
C.无
D.AB
6.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767270087095990.png" title="202010151602767270087095990.png" alt="图片.png"/>
A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767300381027398.png" title="202010151602767300381027398.png" alt="图片.png"/>
B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767319747052589.png" title="202010151602767319747052589.png" alt="图片.png"/>
C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767354525025639.png" title="202010151602767354525025639.png" alt="图片.png"/>
D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767336767080061.png" title="202010151602767336767080061.png" alt="图片.png"/>
7.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603502709141064132.png" title="202010241603502709141064132.png" alt="图片.png"/>
A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321850069069012.png" title="202010101602321850069069012.png" alt="图片.png"/>
B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321798897000884.png" title="202010101602321798897000884.png" alt="图片.png"/>
C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321828300048777.png" title="202010101602321828300048777.png" alt="图片.png"/>
D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321781447012807.png" title="202010101602321781447012807.png" alt="图片.png"/>
8.[单选题] 定圆内一组平行弦中点的轨迹是（ ）。
A.B.圆
B.不确定
C.线段
D.直线
9.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767131211060019.png" title="202010151602767131211060019.png" alt="图片.png"/>
A.D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767183084022424.png" title="202010151602767183084022424.png" alt="图片.png"/>
B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767163340092860.png" title="202010151602767163340092860.png" alt="图片.png"/>
C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767199092063297.png" title="202010151602767199092063297.png" alt="图片.png"/>
D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767213862023633.png" title="202010151602767213862023633.png" alt="图片.png"/>
10.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602761742419019438.png" title="202010151602761742419019438.png" alt="图片.png"/>
A.10
B.6
C.8
D.12
11.[单选题] 下列条件中不能判断两个三角形全等的是（ ）
A.两边及夹角对应相等
B.一边上的高及另两边对应相等
C.三边对应相等
D.两角及夹边对应相等
12.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603504934093051692.png" title="202010241603504934093051692.png" alt="图片.png"/>
A.C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602318552508044058.png" title="202010101602318552508044058.png" alt="图片.png"/>
B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602318507957021548.png" title="202010101602318507957021548.png" alt="图片.png"/>
C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602318476949018311.png" title="202010101602318476949018311.png" alt="图片.png"/>
D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602318529127032291.png" title="202010101602318529127032291.png" alt="图片.png"/>
13.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602767795585005390.png" title="202010151602767795585005390.png" alt="图片.png"/>
A.2
B.1/2
C.1
D.1/3
14.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603528611057063240.png" title="202010241603528611057063240.png" alt="图片.png"/>
A.E.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321638494065293.png" title="202010101602321638494065293.png" alt="图片.png"/>
B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321620367080656.png" title="202010101602321620367080656.png" alt="图片.png"/>
C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321678214003892.png" title="202010101602321678214003892.png" alt="图片.png"/>
D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602321656496092756.png" title="202010101602321656496092756.png" alt="图片.png"/>
15.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602766132084062196.png" title="202010151602766132084062196.png" alt="图片.png"/>
A.无
B.AC
C.BC
D.AB
16.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603505003890008288.png" title="202010241603505003890008288.png" alt="图片.png"/>
A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602317756062040809.png" title="202010101602317756062040809.png" alt="图片.png"/>
B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602317711703059628.png" title="202010101602317711703059628.png" alt="图片.png"/>
C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602317736286014340.png" title="202010101602317736286014340.png" alt="图片.png"/>
D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602317588401095657.png" title="202010101602317588401095657.png" alt="图片.png"/>
更多答案进 ap5u.com 福师q7 612 960 21
17.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602766379620075983.png" title="202010151602766379620075983.png" alt="图片.png"/>
A.锐角三角形
B.不能判断
C.钝角三角形
D.直角三角形
18.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/15/202010151602766256464001110.png" title="202010151602766256464001110.png" alt="图片.png"/>
A.无
B.AP
C.AC
D.AB
19.[判断题] 三角形的内心到三边上的距离相等。（ ）
A.正确
B.错误
20.[判断题] 用反证法证明就是证原命题的逆命题不成立。（ ）
A.正确
B.错误
21.[判断题] 已知一个三角形，能用尺规作出该三角形的内切圆和外接圆。（ ）
A.正确
B.错误
22.[判断题] 三角形中大边所对的角平分线较大。（ ）
A.正确
B.错误
23.[判断题] 平面内到两定点距离的平方和为常量的点的轨迹是一条直线。（ ）
A.正确
B.错误
24.[判断题] 可用尺规作一条唯一的直线平行于梯形的底边且平分该面积。（ ）
A.正确
B.错误
25.[判断题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/08/202010081602156280383029229.png" title="202010081602156280383029229.png" alt="图片.png"/>的外心位于顶点C。（ ）
A.正确
B.错误
26.[判断题] 若轨迹上的点不能到达任意远处，且轨迹循环无端，则轨迹是线段。（ ）
A.正确
B.错误
27.[判断题] 在周长一定的平面n边形中，正n边形的面积最小。（ ）
A.正确
B.错误
28.[判断题] 同一性原理是指命题的条件和结论的事项均唯一。（ ）
A.正确
B.错误
29.[判断题] 三角形的外心到三边上的距离相等。（ ）
A.正确
B.错误
30.[判断题] 平面内到定点和定直线距离相等的点的轨迹是椭圆。（ ）
A.正确
B.错误
31.[判断题] 设G为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/08/202010081602158994742090941.png" title="202010081602158994742090941.png" alt="图片.png"/>的重心，则<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/08/202010081602159052255065887.png" title="202010081602159052255065887.png" alt="图片.png"/>。（ ）
A.正确
B.错误
32.[判断题] 用综合法时叙述简明，所以综合法优于分析法。（ ）
A.正确
B.错误
33.[判断题] 分析法是从命题的结论入手执果索因的方法。（ ）
A.正确
B.错误
34.[判断题] 在周长一定的封闭图形中，圆的面积最大。（ ）
A.正确
B.错误
35.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181602990416559010388.png" title="202010181602990416559010388.png" alt="图片.png"/>
A.
36.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/16/202010161602851015764067492.png" title="202010161602851015764067492.png" alt="图片.png"/>
A.
37.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/17/202010171602927771587001158.png" title="202010171602927771587001158.png" alt="图片.png"/>
A.
38.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181603023848026011944.png" title="202010181603023848026011944.png" alt="图片.png"/>
A.
39.[主观填空题] 命题P的逆命题的等价命题是P的（ ）命题。
A.
40.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/16/202010161602848172710095670.png" title="202010161602848172710095670.png" alt="图片.png"/>
A.
41.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181602991466854013967.png" title="202010181602991466854013967.png" alt="图片.png"/>
A.
42.[主观填空题] 平面内到两定点距离之比为1的点的轨迹是（ ）。
A.
43.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181603023751203072660.png" title="202010181603023751203072660.png" alt="图片.png"/>
A.
44.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603525688897028571.png" title="202010241603525688897028571.png" alt="图片.png"/>
A.
45.[主观填空题] 三角形的内心是三角形（ ）的交点。
A.
46.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/17/202010171602927227179011799.png" title="202010171602927227179011799.png" alt="图片.png"/>
A.
47.[主观填空题] 平面内到两定点距离之比不为1的点的轨迹是-圆，该圆叫（ ）。
A.
48.[主观填空题] 三角形的垂心是（ ）的交点。
A.
49.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181603023706544077696.png" title="202010181603023706544077696.png" alt="图片.png"/>
A.
50.[主观填空题] 若一个三角形的内心、外心、重心、垂心，四心合一，则此三角形为（ ）。
A.
51.[主观填空题] 由各个特殊事项加以抽象提高得出一般规律的方法叫（ ）。
A.
52.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181603024135467017637.png" title="202010181603024135467017637.png" alt="图片.png"/>
A.
53.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181602991507940000980.png" title="202010181602991507940000980.png" alt="图片.png"/>
A.
54.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/16/202010161602848224465040371.png" title="202010161602848224465040371.png" alt="图片.png"/>
A.
55.[主观填空题] 三角形中到三顶点距离平方和最小的点为（ ）。
A.
56.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/16/202010161602847431010022092.png" title="202010161602847431010022092.png" alt="图片.png"/>
A.
57.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/16/202010161602849900309092786.png" title="202010161602849900309092786.png" alt="图片.png"/>
A.
58.[主观填空题] 平面内到已知角两边距离相等的点的轨迹是（ ）。
A.
59.[主观填空题] 顺次连接矩形各边中点所得的四边形是（ ）。
A.
60.[主观填空题] 介于定三角形两边之间且平行于第三边的线段，其中点的轨迹是（ ）。
A.
61.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181603023883213033989.png" title="202010181603023883213033989.png" alt="图片.png"/>
A.
62.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181603024717413069487.png" title="202010181603024717413069487.png" alt="图片.png"/>
A.
63.[主观填空题] 若三角形两边的中线相等，则此三角形为（ ）三角形。
A.
64.[主观填空题] 若三角形的两角的角平分线相等，则此三角形为（ ）三角形。
A.
65.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603527209860007072.png" title="202010241603527209860007072.png" alt="图片.png"/>
A.
66.[主观填空题] 四边形ABCD共圆的充分条件是（ ）。
A.
67.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603524958647017360.png" title="202010241603524958647017360.png" alt="图片.png"/>
A.
68.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/18/202010181602989527663012766.png" title="202010181602989527663012766.png" alt="图片.png"/>
A.
69.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603525811260055358.png" title="202010241603525811260055358.png" alt="图片.png"/>
A.
70.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/24/202010241603524862936043067.png" title="202010241603524862936043067.png" alt="图片.png"/>
A.
71.[主观填空题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/16/202010161602847752740078070.png" title="202010161602847752740078070.png" alt="图片.png"/>
A.
72.[主观填空题] 平面内与两条平行线距离相等的点的轨迹是（ ）。
A.
73.[主观填空题] 若三角形的三条中位线围成的三角形的周长是5cm，则三角形的周长是（ ）cm。
A.
74.[问答题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602295151887095894.png" title="202010101602295151887095894.png" alt="图片.png"/>
<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602295173383024995.png" title="202010101602295173383024995.png" alt="图片.png"/>
A.
75.[问答题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602295285569028598.png" title="202010101602295285569028598.png" alt="图片.png"/>
<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602295306836043585.png" title="202010101602295306836043585.png" alt="图片.png"/>
A.
76.[问答题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602293835820083471.png" title="202010101602293835820083471.png" alt="图片.png"/>
A.
77.[问答题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602292254312041304.png" title="202010101602292254312041304.png" alt="图片.png"/>
A.
78.[问答题] 证明：三角形中，大边上的中线较小。
A.
79.[问答题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/09/202010091602249522805090843.png" title="202010091602249522805090843.png" alt="图片.png"/>
<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/09/202010091602249747171018310.png" title="202010091602249747171018310.png" alt="图片.png"/>
A.
80.[问答题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602293392974078221.png" title="202010101602293392974078221.png" alt="图片.png"/>
<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/10/10/202010101602293458647082500.png" title="202010101602293458647082500.png" alt="图片.png"/>
A.
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