# IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 380 - 387 of 1059

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## Question 380

### Question

MCQ▾

Sum of all the four interior angles of a quadrilateral is equal to ________.

### Choices

Choice (4)Response

a.

900

b.

1800

c.

3600

d.

1200

## Question 381

### Question

MCQ▾

The ratio of milk and water in the mixture is 8: 3. If milk in the mixture is 5.8 liter, then weight of water in it is

### Choices

Choice (4)Response

a.

2.175 liter

b.

3.175 liter

c.

2.15 liter

d.

5.25 liter

## Question 382

### Question

MCQ▾

If Q is the midpoint of PR and R is the midpoint of QS where P, Q, R, S are collinear, then

### Choices

Choice (4)Response

a.

PR = ₹

b.

PS = QR

c.

PQ = QS

d.

PQ = ₹

## Question 383

### Question

MCQ▾

A pair of lines which do not intersect at any point are called________.

### Choices

Choice (4)Response

a.

Concurrent lines

b.

Intersecting lines

c.

Perpendicular lines

d.

Parallel lines

## Question 384

### Question

MCQ▾

In a right angled triangle if an angle measures , then the measure of other angle is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 385

### Question

MCQ▾

The correct expanded form for 2.06 is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 386

### Question

MCQ▾

The basic elements of a square are

### Choices

Choice (4)Response

a.

4 sides

b.

4 vertices

c.

4 angles

d.

All a., b. and c. are correct

## Question 387

### Question

MCQ▾

Set of points extending infinitely in all directions on the same flat surface is ________.

### Choices

Choice (4)Response

a.

Line segment

b.

Point

c.

Line

d.

Plane