# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 348 - 352 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. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 450.00 or

How to register?

## Question number: 348

Edit
MCQ▾

### Question

Which of the points A (0,6), B (-2,4), C (-4,0), D (0, -2), E (0, -5), F (4, -4) do lie on the Y-axis?

### Choices

Choice (4) Response

a.

A, F, E

b.

B and E only

c.

A and D only

d.

A, D, E

## Question number: 349

Edit
MCQ▾

### Question

In triangle ABC, the altitude from A to BC meets BC at D, and the altitude from B to CA meets AD at H. if , and , if then the length of HD is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 350

Edit
MCQ▾

### Question

Two regular polygons are such that the ratio between their no. of sides is 1: 2 and the ratio of measures of their interior angles is 4: 7. Find the number of sides of each polygon

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 351

Edit
MCQ▾

### Question

The area of a quadrilateral JKLM, in which, is an equilateral triangles of side 20 cm and is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 352

Edit
MCQ▾

### Question

A1 is a circle of radius 8 cm, A2 is a circle of radius 12 cm. Shivangi wants the two circles to touch tangentially. She knows that there are two possibilities for the distance between their centres. What are these two distances?

### Choices

Choice (4) Response

a.

4 cm and 20 cm

b.

5 cm and 19 cm

c.

12 cm and 4 cm

d.

16 cm and 8 cm