PQ and RS are two equal chords of a circle with centre O such that ㄥPOQ = 70°, then ㄥORS = ________.

(a)

60°

(b)

70°

(c)

55°

(d)

80°

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

(a)

25 cm

(b)

20 cm

(c)

40 cm

(d)

18 cm

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

(a)

80°

(b)

85°

(c)

70°

(d)

65°

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

(a)

30°

(b)

20°

(c)

15°

(d)

25°

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 = 4 cm. The radius of the circle is ________.

(a)

8cm

(b)

4cm

(c)

6cm

(d)

10cm

In the figure, PQRS and PTVS are two cyclic quadrilaterals, If ㄥQRS = 100°, then ㄥTVS = ______.

(a)

80°

(b)

100°

(c)

70°

(d)

90°

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

(a)

100°

(b)

105°

(c)

85°

(d)

90°

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°

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

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

(a)

10 cm

(b)

6 cm

(c)

7 cm

(d)

9 cm

Twice of the radius is called _______ of the circle

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diameter

Longest chord passes through the _______ of the circle.

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centre

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

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radius

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

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arc

A circle divides the plane into ________ parts.

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three

Line segment joining any two points on the circle is called radius of the circle.

(a) True

(b) False

Point of concurrency of the diameter is the centre of the circle

(a) True

(b) False

The boundary of the circle is called its circumference

(a) True

(b) False

A circle has infinite number of equal chords

(a) True

(b) False

Sector is the region between the chord and its corresponding arc

(a) True

(b) False