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Year3二上第三单元

Authored by Jessie Liu

Mathematics

2nd Grade

Used 4+ times

Year3二上第三单元
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13 questions

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1.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

(  )时整或(  )时整时,钟面上时针和分针形成的角是直角。

(a)  

Answer explanation

在钟面上,时针和分针形成直角的时刻是3时整和9时整。此时,时针与分针的夹角为90度,因此正确答案是3时整或9时整时。

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

下面用三角尺拼出的角分别是什么角?

直角

锐角

钝角

没有角

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

一个活动角,如果它的两条边之间的开口越小,这个角就越( )。

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

一个三角板上有(   )个直角。

1

2

3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

图形中有(   )个角。

1

2

3

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

直角比(   )角大。

锐角

钝角

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

任何一个角,都有(   )。

两个顶点和一条边

一个顶点和一条边

两个顶点和两条边

一个顶点和两条边

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