
8D国家数学_1-5课时
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Erfu Liu
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列每组数分别表示3根小木棒的长度(单位:cm),其中能搭成一个三角形的是( )
5,7,12
7,7,15
6,9,16
6,8,12
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列各图中,正确画出AC边上的高的是( )
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图,CD,CE,CF分别是△ABC的高、角平分线和中线,则下列各式中错误的是( )
BA=2BF
AE=BE
CD⊥AB
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列图形中,具有稳定性的是( )
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若三角形的三边长分别为整数4,5,x,则x的最大值为_______.
1
2
8
9
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图,AD是△ABC的中线,△ABD的面积为5,则△ACD的面积为________,△ABC的面积为________.
5,5
5,10
10,5
10,10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图,王师傅用4根木条钉成一个四边形木架,要使这个木架不变形,他至少要再钉上木条的根数是( )
0
1
2
3
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