# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 122 - 126 of 929

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## Question number: 122

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MCQ▾

### Question

In figure PQ, RS and TU are three lines concurrent at A. If ∠PAU = 6y˚, ∠QAS = 4y˚ and ∠RAT = 2y˚, the value of y is________ Image PQ, RS and TU Are Three Lines Concurrent at A Image PQ, RS and TU are three lines concurrent at A and find the value of y

### Choices

Choice (4) Response

a.

15

b.

20

c.

25

d.

30

## Question number: 123

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MCQ▾

### Question

The complementary angle of an angle is one fourth of itself. Then the angle of its complement are________

### Choices

Choice (4) Response

a.

45˚, 45˚

b.

72˚, 18˚

c.

55˚, 35˚

d.

60˚, 30˚

## Question number: 124

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MCQ▾

### Question

The angles of a triangle are in the ratio . The triangle is ________

### Choices

Choice (4) Response

a.

Acute

b.

Isosceles

c.

Obtuse

d.

None of the above

## Question number: 125

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MCQ▾

### Question

The given figure PQRS is a parallelogram then the values of and are________ Image is Parallelogram Image is parallelogram and it’s define the angle values

### Choices

Choice (4) Response

a.

35˚, 70˚

b.

60˚, 45˚

c.

45˚, 60˚

d.

70˚, 35˚

## Question number: 126

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MCQ▾

### Question

In the figure, a is greater than b by one fifth of a right angle. Then a, b respectively are________ Image Define a is Greater Than B by One Fifth of a Right Angle Image define sthe right angle and find the value of a and b

### Choices

Choice (4) Response

a.

99˚, 81˚

b.

50˚, 120˚

c.

130˚, 60˚

d.

120˚, 110˚