圓與點線的關係

Quiz
•
Mathematics
•
9th Grade
•
Hard
曾偉倫 曾偉倫
Used 2+ times
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲是由一條直徑、一條弦及一圓弧所圍成的灰色圖形;乙是由兩條半徑與一圓弧所圍成的灰色圖形;丙是由不過圓心 O 的兩線段與一圓弧所圍成的灰色圖形。下列關於此三圖形的敘述何者正確?〔93.基測Ⅰ〕
只有甲是扇形
只有乙是扇形
只有丙是扇形
只有乙、丙是扇形
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知扇形 AOB 的半徑為 10 公分,圓心角為 54°,則此扇形面積為多少平方公分?
100π
20π
15π
5π
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1.已知圓 O 上 A、B 兩點將圓分成優、劣兩弧,若兩弧的度數比為 8:1,則劣弧所對圓心角∠AOB=? (A) 20° (B) 40° (C) 80° (D) 100°。
20°
40°
80°
100°。
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖,有一扇形,OA=8 公分,∠AOB=135°,求弧長AB的長為多少公分?
3π
6π
12π
24π
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列哪一個圖形是兩個半徑和夾弧所圍成的區域?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
設 A、B 兩點把圓 O 分成大、小兩弧,若大弧的度數比小弧度數的 3 倍多 60°,則∠AOB=?
65°
70°
75°
80°
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ABCD 為正方形,邊長=6 公分,且斜線部分為兩個扇形重疊的部分,則斜線部分的周長為多少公分?
3π
6π
9π
12π
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