#### Geometry One Mark Questions

9th Standard

Reg.No. :
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Maths

Time : 00:30:00 Hrs
Total Marks : 20
10 x 1 = 10
1. PQ and RS are two equal chords of a circle with centre O such that ㄥPOQ=70°, then ㄥOR

(a)

60°

(b)

70°

(c)

55°

(d)

80°

2. A chord is at a distance of 15cm from the centre of the circle of radius 25cm. The length of the chord is

(a)

25cm

(b)

20cm

(c)

40cm

(d)

18cm

3. In the figure, O is the centre of the circle and ㄥACB=40° then ㄥAOB

(a)

80°

(b)

85°

(c)

70°

(d)

65°

4. In a cyclic quadrilaterals ABCD, ㄥA=4x,ㄥC=2x the value of x is

(a)

30°

(b)

20°

(c)

15°

(d)

25°

5. In the figure, O is the centre of a circle and diameter AB bisects the chord CD at a point E such that CE=ED=8 cm and EB=4cm. The radius of the circle is

(a)

8cm

(b)

4cm

(c)

6cm

(d)

10cm

6. In the figure, PQRS and PTVS are two cyclic quadrilaterals, If ㄥQR = 80°, then ㄥTVS=

(a)

80°

(b)

100°

(c)

70°

(d)

90°

7. If one angle of a cyclic quadrilateral is 75° , then the opposite angle is

(a)

100°

(b)

105°

(c)

85°

(d)

90°

8. In the figure, ABCD is a cyclic quadrilateral in which DC produced to E and CF is drawn parallel to AB such that ㄥADC=80° and ㄥECF=20°, then ㄥBAD=?

(a)

100°

(b)

20°

(c)

120°

(d)

110°

9. AD is a diameter of a circle and AB is a chord If AD = 30 cm and AB = 24cm then the distance of AB from the centre of the circle is

(a)

10cm

(b)

9cm

(c)

8cm

(d)

6cm

10. In the given figure, If OP=17cm PQ=30, cm and OS is perpendicular to PQ, then RS is

(a)

10cm

(b)

6cm

(c)

7cm

(d)

9cm.

11. 5 x 1 = 5
12. Twice of the radius is called _______ of the circle

()

diameter

13. Longest chord passes through the _______ of the circle.

()

centre

14. Distance from the centre to any point on the circumference of the circle is called ____

()

15. A part of a circle between any two points is called a/an ________ of the circle

()

arc

16. A circle divides the plane into ________ parts.

()

three

17. 5 x 1 = 5
18. Line segment joining any two points on the circle is called radius of the circle.

(a) True
(b) False
19. Point of concurrency of the diameter is the centre of the circle

(a) True
(b) False
20. The boundary of the circle is called its circumference

(a) True
(b) False
21. A circle has infinite number of equal chords

(a) True
(b) False
22. Sector is the region between the chord and its corresponding arc

(a) True
(b) False