# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 197 - 203 of 931

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## Question 197

### Question

MCQ▾In the given figure, three equilateral triangles have a common vertex then

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 198

### Question

MCQ▾In the given figure, AB is a mirror, PQ is the incident ray and QR is the reflected ray. If ∠ PQR = 136˚, then ∠ PQA is ________

### Choices

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

a. | 24˚ | |

b. | 21˚ | |

c. | 26˚ | |

d. | 22˚ |

## Question 199

### Question

MCQ▾If , then which of the following expressions holds?

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 200

### Question

MCQ▾If one leg of an isosceles right-angles triangle is increased by 6 cm and the other leg is increased by 4 cm, then change in area of the triangle is 24 sq. cm. find the length of the leg of the original triangle.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 201

### Question

MCQ▾In the given figure, the value of y is ________

### Choices

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

a. | 10 | |

b. | 20 | |

c. | 24 | |

d. | 22 |

## Question 202

### Question

MCQ▾In the given figure, , and , find

### Choices

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

a. | 55˚ | |

b. | 50˚ | |

c. | 45˚ | |

d. | 60˚ |

## Question 203

### Question

MCQ▾Ray OE bisects ∠ AOB and OF is the ray opposite OE, then ∠ FOB = ________

### Choices

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

a. | ∠ BOE | |

b. | ∠ FOE | |

c. | ∠ AOE | |

d. | ∠ FOA |