

考前概念複習
Presentation
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
IMING LU
Used 1+ times
FREE Resource
0 Slides • 5 Questions
1
Multiple Choice
已知圓O的直徑為15公分,而圓心O到四條直線L、M、N、H的距離分別為15公分、10公分、7.5公分、5公分,
那麼此四條直線中,哪一條與圓O只有一個交點?
L
M
N
H
2
Multiple Choice
如右圖,直線CD切圓O於C點,CD=4、OD=5,則圓O的半徑長為多少?
3
4
5
6
3
Multiple Choice
如圖,是圓O上一弦,為其弦心距。已知=5公分、 圓O的半徑為13公分,則弦的長度為多少公分?
12
13
24
26
4
Fill in the Blanks
線段AB、CD,為圓O的直徑,E是圓O上一點, 已知∠EAB=32°,∠DBA=34°,則DE弧度=?
5
Fill in the Blanks
如圖,線段AB、CD、AE、CE為圓O中的弦,其中AB平行CD,若弧BE=46,角ECD=60,則角AEC=?
已知圓O的直徑為15公分,而圓心O到四條直線L、M、N、H的距離分別為15公分、10公分、7.5公分、5公分,
那麼此四條直線中,哪一條與圓O只有一個交點?
L
M
N
H
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