# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 121 - 126 of 931

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## Question 121

### Question

MCQ▾

The angles of quadrilateral are in the ratio . All angles of a quadrilaterals are________

### Choices

Choice (4)Response

a.

72˚, 36˚, 108˚, 144˚

b.

36˚, 60˚, 20˚, 156˚

c.

145˚, 20˚, 30˚, 60˚

d.

108˚, 144˚, 45˚, 15˚

## Question 122

### Question

MCQ▾

In figure PQ, ₹ and TU are three lines concurrent at A. If ∠ PAU = 6y˚, ∠ QAS = 4y˚ and ∠ RAT = 2y˚, the value of y is________

### Choices

Choice (4)Response

a.

15

b.

20

c.

25

d.

30

## Question 123

### Question

MCQ▾

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 124

### Question

MCQ▾

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 125

### Question

MCQ▾

The given figure PQRS is a parallelogram then the values of and are________

### Choices

Choice (4)Response

a.

35˚, 70˚

b.

60˚, 45˚

c.

45˚, 60˚

d.

70˚, 35˚

## Question 126

### Question

MCQ▾

In the figure, a is greater than b by one fifth of a right angle. Then a, b respectively are________

### Choices

Choice (4)Response

a.

99˚, 81˚

b.

50˚, 120˚

c.

130˚, 60˚

d.

120˚, 110˚