# Triangles and Circles (IMO- Mathematics Olympiad Class 9): Questions 5 - 8 of 79

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 919 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

## Question number: 5

» Triangles and Circles

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 6

» Triangles and Circles

MCQ▾

### Question

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 number: 7

» Triangles and Circles

MCQ▾

### Question

Triangle PAB is formed by three tangents to circle with center O and, then angle ACB equals ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 8

» Triangles and Circles

MCQ▾

### Question

An exterior angle of a triangle is and the measure of the two remote interior angles are 25 degree and degree. x = ________.

### Choices

Choice (4) Response

a.

25

b.

20

c.

24

d.

29

f Page