
九上數學2-2
Authored by 蔡佩旻 蔡佩旻
Mathematics
9th Grade
Used 8+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如右圖,O為兩同心圓的圓心,∠AOB=∠COD。
已知兩同心圓的半徑分別為5公分、2公分,且弧AB 為10π/3 公分,求弧CD 為多少公分?
4π/3
8π/3
5π/3
10π/3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如右圖, AB、CD 為圓O的直徑,E是圓O上一點,
已知∠EAB=32°,∠DBA=34°,則下列何者錯誤?
弧AD= 68 度
∠EDB= 32 度
弧DE=48度
∠EDC= 60 度
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖,已知A、B、C三點皆在圓O上,∠ABC=65°,求∠OCA為多少度?
25°
35°
45°
55°
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖, AB為圓 O 的直徑,P、Q、R、S 為圓上相異四點,則下列敘述何者正確?
∠APB 為銳角
∠AQB 為直角
∠ARB 為鈍角
∠ASB<∠ARB
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如右圖,A、B、C、D在圓上,且AB與CD交於P點,AD與BC交於Q點。若∠P=40°,∠Q=32°,則∠B是多少度?
32
40
54
60
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖,有一圓通過△ABC 的三個頂點,且BC的中垂線與弧AC交於 D 點。若∠B=74°,∠C=46°,則弧AD的度數為何?〔103. 會考〕
28
60
92
120
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如右圖,圓O中,AB //OC ,且弧AB =70°,求弧CDB 的度數為何?
55
70
140
235
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