The angles of the triangle are 3x–40, x+20 and 2x–10 then the value of x is ________.

(a)

40°

(b)

35°

(c)

50°

(d)

45°

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, 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