# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 176 - 181 of 931

Access detailed explanations (illustrated with images and videos) to **931** questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. *Unlimited Access, Unlimited Time, on Unlimited Devices*!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

How to register? Already Subscribed?

## Question 176

### Question

MCQ▾The measure of an angle is four times the measure of its supplementary angle. Then the angles are________

### Choices

Choice (4) | Response | |
---|---|---|

a. | 50˚, 200˚ | |

b. | 36˚, 144˚ | |

c. | 18˚, 72˚ | |

d. | 40˚, 160˚ |

## Question 177

### Question

MCQ▾In the given figure, ABCD is a trapezium in which AB = 7cm, AD = BC = 5 cm, DC = x cm and the distance between AB and CD is 4 cm. Then the value of x is ________

### Choices

Choice (4) | Response | |
---|---|---|

a. | 13 cm | |

b. | 19 cm | |

c. | Cannot be determined | |

d. | 16 cm |

## 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

### 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________

### Choices

Choice (4) | Response | |
---|---|---|

a. | 110˚, 70˚ | |

b. | 120˚, 80˚ | |

c. | 80˚, 120˚ | |

d. | 70˚, 100˚ |