
必然事件
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Medium
hang ku
Used 1+ times
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在⊙O 中,同時作它的內接正三角形、正方形、正五邊形、正六邊形、正十
邊形,其中邊長最大的是正___形
三邊
五邊
六邊
十邊
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在⊙O 中,同時作它的內接正三角形、正方形、正五邊形、正六邊形、正十
邊形,其中周長最大的是正___形
三邊
五邊
六邊
十邊
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在⊙O 中,同時作它的內接正三角形、正方形、正五邊形、正六邊形、正十
邊形,其中面積最大的是正___形
三邊
五邊
六邊
十邊
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果⊙O 的面積是⊙ A 的面積的一半,那麼⊙O 的半徑是⊙ A 的半徑的__倍
0.5
1
0.25
2
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
必然事件,必不能事件、隨機事件
OK
OK
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列事件中是随机事件的是( )
A. 明天太阳从东方升起
B. 经过有交通信号灯的路口时遇到红灯
C. 平面内不共线的三点确定一个圆
D. 任意画一个三角形,其内角和是540°
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列事件中,必然事件为( )
A. 投掷一枚硬币,向上一面是正面
B. 经过有交通信号灯的路口;遇到红灯
C. 打开电视机,正在播放新闻联播
D. 口袋中装有2个红球和1个白球,从中任意摸出的2个球中有红球
A
B
C
D
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