
S5 第10章圓的性質(一)持續評估(2)(2021)
Authored by wing lo
Mathematics
11th Grade
Used 4+ times

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16 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圖中,O為圓ABC的圓心。M為弦AC的中點。若OA = 17 cm及
AC = 30 cm,則MB =
A.8 cm。
B.9 cm。
C.11 cm。
D.12 cm。
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圖中,AB為半圓ABC的直徑。若 弧長AC: 弧長BC= 3: 2,則 ABC =
A.30°。
B.36°。
C.54°。
D.60°。
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圖中,O為圓ABC的圓心。若 AOB = 136°,則 CAO + CBO =
A.58°。
B.64°。
C.68°。
D.72°。
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圖中,O為圓ABCD的圓心。若 OAD = 40°、 ADC = 85° 及 BCD = 75°,則 OBC =
A.15°。
B.20°。
C.30°。
D40°。
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圖中,BE為圓ABCDE的一直徑。若 DCE = 15°,則 DAB =
A.75°。
B.70°。
C.60°。
D.45°。
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圖中,ABCD為一正方形。BCF及ADE均為等邊三角形。求 AFE。
A.60°。
B.65°。
C.75°。
D.80°。
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圖中,O為圓ABC的圓心及D為BC上的一點。
AD BC、
BC = 8 cm及OB = 5 cm。求 △ABD的面積。
A.16 cm2
B.18 cm2
C.20 cm2
D.32 cm2
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