# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 145 - 151 of 929

Access detailed explanations (illustrated with images and videos) to 929 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time! View Sample Explanation or View Features.

Rs. 450.00 or

How to register?

## Question number: 145

Edit
MCQ▾

### Question

In the figure , find ________

### Choices

Choice (4)Response

a.

120˚

b.

105˚

c.

100˚

d.

115˚

## Question number: 146

Edit
MCQ▾

### Question

How many sides does a regular polygon have, each angle of which is of measure 150˚?

### Choices

Choice (4)Response

a.

17

b.

18

c.

16

d.

12

## Question number: 147

Edit
MCQ▾

### Question

If the product of two surds is a rational number, then each one of them is called the ________ of the other________

### Choices

Choice (4)Response

a.

Rationalizing factor

b.

Binomial surd

c.

Conjugate surd

d.

Negative

## Question number: 148

Edit
MCQ▾

### Question

If two complementary angles are in the ratio 4: 11, then the angles are________

### Choices

Choice (4)Response

a.

30˚, 60˚

b.

61˚, 29˚

c.

24˚, 66˚

d.

56˚, 34˚

## Question number: 149

Edit
MCQ▾

### Question

In a parallelogram, the sum of the angle bisectors of two adjacent angles is ________

### Choices

Choice (4)Response

a.

60˚

b.

45˚

c.

90˚

d.

30˚

## Question number: 150

Edit
MCQ▾

### Question

The value of x in the given figure is ________

### Choices

Choice (4)Response

a.

20˚

b.

118˚

c.

223˚

d.

72˚

## Question number: 151

Edit
MCQ▾

### Question

In the figure, if , then x = ________

### Choices

Choice (4)Response

a.

30˚

b.

60˚

c.

29˚

d.

45˚

Developed by: