Circle Exercise Ex. 17(A)
Solution 1
Let AB be the chord and O be the centre of the circle.
Let OC be the perpendicular drawn from O to AB.
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 1 198581 image001 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198581_image001.png?resize=168%2C139&ssl=1)
We know, that the perpendicular to a chord, from the centre of a circle, bisects the chord.
AC = CB = 3 cm
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 2 198581 image003 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198581_image003.png?resize=367%2C95&ssl=1)
Solution 2
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 3 198583 image004 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198583_image004.png?resize=183%2C155&ssl=1)
Let AB be the chord and O be the centre of the circle.
Let OC be the perpendicular drawn from O to AB.
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 4 198583 image005 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198583_image005.png?resize=125%2C120&ssl=1)
We know, that the perpendicular to a chord, from the centre of a circle, bisects the chord.
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 5 198583 image006 1 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198583_image006-1.png?resize=367%2C95&ssl=1)
Hence, radius of the circle is 5 cm.
Solution 3
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 6 198585 image007 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198585_image007.png?resize=175%2C148&ssl=1)
Let AB be the chord and O be the centre of the circle.
Let OC be the perpendicular drawn from O to AB.
We know, that the perpendicular to a chord, from the centre of a circle, bisects the chord.
AC = CB
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 7 198585 image008 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198585_image008.png?resize=367%2C114&ssl=1)
Solution 4
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 8 198587 image009 2 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198587_image009-2.png?resize=397%2C262&ssl=1)
Let AB be the chord of length 24 cm and O be the centre of the circle.
Let OC be the perpendicular drawn from O to AB.
We know, that the perpendicular to a chord, from the centre of a circle, bisects the chord.
AC = CB = 12 cm
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 9 198583 image006 1 1 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198583_image006-1-1.png?resize=367%2C95&ssl=1)
Solution 5
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 10 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198589_image011.png?resize=187%2C153&ssl=1)
For the inner circle, BC is a chord and .
We know that the perpendicular to a chord, from the centre of a circle, bisects the chord.
BP = PC
For the outer circle, AD is the chord and.
We know that the perpendicular to a chord, from the centre of a circle, bisects the chord.
AP = PD
By Pythagoras Theorem,
OA2 = OP2 + AP2
=> AP2 = (34)2 – (16)2 = 900
=> AP = 30 cm
AB = AP – BP = 30 – 12 = 18 cm
Solution 6
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 11 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198593_image016.png?resize=383%2C166&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 12 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198593_image017-1.png?resize=383%2C401&ssl=1)
Let O be the centre of the circle and AB and CD be the two parallel chords of length 30 cm and 16 cm respectively.
Drop OE and OF perpendicular on AB and CD from the centre O.
Solution 7
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 13 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198595_image018.png?resize=193%2C155&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 14 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198595_image019.png?resize=383%2C351&ssl=1)
Since the distance between the chords is greater than the radius of the circle (15 cm), so the chords will be on the opposite sides of the centre.
Let O be the centre of the circle and AB and CD be the two parallel chords such that AB = 24 cm.
Let length of CD be 2x cm.
Drop OE and OF perpendicular on AB and CD from the centre O.
Solution 8
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 15 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198597_image021.png?resize=175%2C179&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 16 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198597_image022.png?resize=374%2C504&ssl=1)
Solution 9
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 17 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198599_image024.png?resize=187%2C165&ssl=1)
Let the radius of the circle be r cm.
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 18 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198599_image025.png?resize=247%2C199&ssl=1)
Solution 10
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 19 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/20160806175028_image003.png?resize=441%2C299&ssl=1)
Circle Exercise Ex. 17(B)
Solution 1
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 20 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198601_image011.png?resize=187%2C153&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 21 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198601_image027.png?resize=383%2C272&ssl=1)
Solution 2
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 22 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198603_image029.png?resize=293%2C152&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 23 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198603_image030.png?resize=461%2C387&ssl=1)
Solution 3
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 24 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198605_image033.png?resize=164%2C160&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 25 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198605_image034.png?resize=383%2C436&ssl=1)
Solution 4
Drop OM and O’N perpendicular on AB and OM’ and O’N’ perpendicular on CD.
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 26 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198607_image037.png?resize=276%2C166&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 27 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198607_image038.png?resize=441%2C236&ssl=1)
Solution 5
Drop OM and ON perpendicular on AB and CD.
Join OP, OB and OD.
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 28 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198609_image040.png?resize=145%2C132&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 29 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198609_image041.png?resize=452%2C511&ssl=1)
Solution 6
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 30 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198611_image044.png?resize=200%2C184&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 31 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198611_image045.png?resize=341%2C423&ssl=1)
Solution 7
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 32 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198613_image046-jpg.webp?resize=209%2C140&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 33 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198613_image047.png?resize=324%2C350&ssl=1)
Solution 8
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 34 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/198615_image048-jpg.webp?resize=159%2C158&ssl=1)
Solution 9
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 35 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17A.png?resize=374%2C316&ssl=1)
Solution 10
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 36 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17A-10supremetutorials.png?resize=201%2C178&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 37 Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17A-102-supremetutorials.png?resize=440%2C255&ssl=1)
Circle Exercise Ex. 17(C)
Solution 1
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 38 Circle Exercise Ex. 17(A)
Circle Exercise Ex. 17(A)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17c-1.png?resize=408%2C538&ssl=1)
Solution 2
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 39 Circle Exercise Ex. 17(c) 2 supremetutorials](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17c-2-supremetutorials.png?resize=243%2C246&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 40 Circle Exercise Ex. 17(c) 2 supremetutorials](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17c-2-supremetutorials2.png?resize=493%2C503&ssl=1)
Solution 3
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 41 Circle Exercise Ex. 17(c) 2 supremetutorials](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17c-3-supremetutorials.png?resize=721%2C804&ssl=1)
Solution 4
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 42 Circle Exercise Ex. 17(c) 4 supremetutorials](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17c-4-supremetutorials.png?resize=251%2C238&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 43 Circle Exercise Ex. 17(c) 4 supremetutorials(2)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17c-4-supremetutorials2.png?resize=467%2C596&ssl=1)
Solution 5
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 44 Circle Exercise Ex. 17(c) 4 supremetutorials(2)](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17c-5-supremetutorials2.png?resize=467%2C705&ssl=1)
Solution 6
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 45 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/Circle-Exercise-Ex.-17c-6-supremetutorials2.png?resize=468%2C775&ssl=1)
Solution 7
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 46 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/class-9-circle-icse-exercise-17.C7.png?resize=561%2C465&ssl=1)
Solution 8
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 47 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-CBSE-BOARDS-CIRCLE-FULL-CHAPTER-ex-17.c-8.png?resize=485%2C470&ssl=1)
Circle Exercise Ex. 17(D)
Solution 1
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 48 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/circle-class-9-icse-selina-ex-17.D1-jpg.webp?resize=200%2C184&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 49 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-selina-ex-17.D2.png?resize=411%2C277&ssl=1)
Solution 2
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 50 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-ex-17.d2-CIRCLE-jpg.webp?resize=376%2C179&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 51 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-ex-17.d2-KA-2-CIRCLE.png?resize=531%2C197&ssl=1)
Solution 3
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 52 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-EX-17.D3.png?resize=521%2C555&ssl=1)
So, the circle can have 0, 1 or 2 points in common.
The maximum number of common points is 2.
Solution 4
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 53 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-ex-17.d3-CIRCLE.png?resize=227%2C185&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 54 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-ex-17.d4-CIRCLE.png?resize=411%2C131&ssl=1)
Solution 5
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 55 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-ex-17.d5-CIRCLE-jpg.webp?resize=208%2C199&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 56 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-ex-17.d52-CIRCLE.png?resize=488%2C351&ssl=1)
Solution 6
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 57 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-ex-17.d6-CIRCLE-jpg.webp?resize=441%2C190&ssl=1)
![CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER 58 CLASS 9 ICSE/CBSE BOARDS CIRCLE FULL CHAPTER](https://i0.wp.com/supremetutorials.in/wp-content/uploads/2023/01/CLASS-9-ICSE-ex-17.d62-CIRCLE.png?resize=565%2C296&ssl=1)
Solution 7
Solution 8
Solution 9
Solution 10
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