6下A 第四、五、六課︰圓
Quiz
•
Mathematics
•
6th Grade
•
Practice Problem
•
Medium
電子學習平台數學 電子學習平台數學
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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中是一個以 O 為圓心的圓。CD 及 OC的長度相等,但AE 比 OE 長。下列何者必定正確?
I. 三角形 COD 是一個等邊三角形。
II. 三角形 AOE 是一個等腰三角形
III. CD 是半徑。
IV. AE 是半徑。
只有 I
只有 I 及 II
只有 I 及 III
只有 II 及 IV
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在圖中,W 和 Y 分別是兩個圓的圓心。小圓的半徑是 2.5 厘米,而大圓的半徑是 3 厘米。四邊形 WXYZ 的周界是 ______ 厘米。
5.5
6
8.5
11
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在圖中,正方形 ABCD 的周界是20 厘米。三角形 OCD 的面積是 _______ 平方厘米。
5
6.25
10
12
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在圖中,O是圓心。以下哪項是直徑?
HN
HG
DC
ON
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下圖中,W 和 Y 分別是兩個圓的圓心。小圓的半徑是 2.5 厘米,大圓的半徑是 3 厘米。四邊形 WXYZ 的周界是 _____ 厘米。
6
11
13
15
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中正方形磁磚的周界是 _____ 厘米。
16
20
24
28
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一個圓的直徑是10 厘米,它的半徑是 ______ 厘米。
5
6
8
3
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