# IMO- Mathematics Olympiad Class 9: Questions 125 - 129 of 919

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## Question number: 125

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

Isosceles

b.

Acute

c.

Obtuse

d.

Question does not provide sufficient data or is vague

## Question number: 126

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

45˚, 60˚

b.

70˚, 35˚

c.

35˚, 70˚

d.

60˚, 45˚

## Question number: 127

MCQ▾

### Question

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.

120˚, 110˚

b.

50˚, 120˚

c.

130˚, 60˚

d.

99˚, 81˚

## Question number: 128

MCQ▾

### Question

In the figure, if , then x = ________

### Choices

Choice (4) Response

a.

60˚

b.

70˚

c.

45˚

d.

55˚

## Question number: 129

MCQ▾

### Question

In the adjoining figure, circles with centres at L, M and N each have a radius of 2 units and are placed as shown here. If PQRS is the smallest rectangle that will enclose the 3 circles, what is the area of PQRS?

### Choices

Choice (4) Response

a.

16 sq. units

b.

12 sq. units

c.

8 sq. units

d.

32 sq. units

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