# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 178 - 184 of 931

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## Question 178

### Question

MCQ▾

If two complementary angles are in the ratio 13: 5, then the angles are________

### Choices

Choice (4)Response

a.

65˚, 25˚

b.

13 x˚, 5 x˚

c.

15˚, 85˚

d.

65˚, 35˚

## Question 179

### Question

MCQ▾

If a right triangle has sides of length 1 and , which of the following could be the length of the remaining side?

1. 1

### Choices

Choice (4)Response

a.

3 Only

b.

1 Only

c.

1 And 3 Only

d.

2 Only

## Question 180

### Question

MCQ▾

If and x and y are positive integers, then y could be which of the following?

### Choices

Choice (4)Response

a.

4

b.

5

c.

3

d.

2

## Question 181

### Question

MCQ▾

In the figure , form a linear pair and . Then a, b respectively are________ Image Defines Angles That Form a Linear Pair

### Choices

Choice (4)Response

a.

110˚, 70˚

b.

120˚, 80˚

c.

80˚, 120˚

d.

70˚, 100˚

## Question 182

### Question

MCQ▾

All the three quadrilaterals ADEC, ABIH and BCGF are squares and if the area of and area of , then find the area of BCGF? Image Define the 3 Quadrilaterals ADEC, ABIH & BCGF Are Squares

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 183

### Question

MCQ▾

If two supplementary angles are in the ratio 13: 5, then the angles is ________

### Choices

Choice (4)Response

a.

120˚, 60˚

b.

125˚, 55˚

c.

130˚, 50˚

d.

145˚, 35˚

## Question 184

### Question

MCQ▾

Two supplementary angles differ by 34˚. Then the angles are ________

### Choices

Choice (4)Response

a.

107˚, 73˚

b.

74˚, 107˚

c.

120˚, 60˚

d.

72˚, 108˚