6下A 第四至六課︰圓的認識(一)(二)

Quiz
•
Mathematics
•
6th Grade
•
Medium
電子學習平台數學 電子學習平台數學
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12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
圖中,直線 AB 是圓的直徑。O 點是 _______。
半徑
圓心
直徑
圓周
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O 是圓心,那麼 OC 是圓的 _______。
圓心
圓周
直徑
半徑
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O 是圓心,圖中哪一條直線是直徑?
MQ
PN
OM
RN
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下哪一項的描述是正確的?
一個圓的圓心一定是在圓周上
半徑 = 直徑 X 2
圓周上任意兩點所連成的直線,最長的是直徑
一個圓只有一條直徑
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O 是圓心,PR 的長度是 OQ 的 _____ 倍。
1
2
3
4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A、B 和 C 分別是小圓、中圓和大圓的圓心。假如小圓的半徑
是 2 cm,大圓的直徑是多少?
8 cm
12 cm
16 cm
18 cm
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圖中,A、B 和 C 分別是三個圓的圓心,這三個圓的半徑分別長 3 cm、4 cm 和 5 cm。三角形 ABC 的周界是多少?
6 cm
12 cm
18 cm
24 cm
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