8D国家数学_1-5课时

8D国家数学_1-5课时

8th Grade

10 Qs

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8D国家数学_1-5课时

8D国家数学_1-5课时

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

Created by

Erfu Liu

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10 questions

Show all answers

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(  )

Media Image
Media Image
Media Image
Media Image

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(  )

Media Image
Media Image
Media Image
Media Image

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

Media Image

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

Media Image

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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