# Lines, Angles and Quadrilaterals (IMO- Mathematics Olympiad (SOF) Class 9): Questions 11 - 16 of 126

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## Question number: 11

MCQ▾

### Question

In the figure below, lines WX and YZ intersect at O. if and , then are equal to ________

### Choices

Choice (4) Response

a.

150˚

b.

154˚

c.

190˚

d.

158˚

## Question number: 12

MCQ▾

### Question

If , and, then x and y respectively are ________

### Choices

Choice (4) Response

a.

65˚, 25˚

b.

90˚, 30˚

c.

35˚, 55˚

d.

45˚, 35˚

## Question number: 13

MCQ▾

### Question

In the given figure, XY is a mirror, AB is the incident ray and BC is the reflected ray. If ∠ABC = 116˚, then ∠CBY is ________

### Choices

Choice (4) Response

a.

32˚

b.

23˚

c.

43˚

d.

21˚

## Question number: 14

MCQ▾

### Question

In the given figure and, then value of x is________.

### Choices

Choice (4) Response

a.

140˚

b.

125˚

c.

135˚

d.

105˚

## Question number: 15

MCQ▾

### Question

How many sides does a regular polygon have, each angle of which is of measure 135˚?

### Choices

Choice (4) Response

a.

6

b.

9

c.

8

d.

7

## Question number: 16

MCQ▾

### Question

Two supplementary angles differ by 94˚. Then the angles are ________

### Choices

Choice (4) Response

a.

67˚, 113˚

b.

120˚, 60˚

c.

142˚, 38˚

d.

137˚, 43˚

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