# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 47 - 50 of 989

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## Question 47

Mathematics
Edit

### Question

MCQ▾

A, B, C are the three angles of a triangle. If , then are

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

## Question 48

Mathematics
Edit

### Question

MCQ▾

ABCD is a parallelogram. The angle bisectors of and meet at O. The measure of is

### Choices

Choice (4)Response

a.

b.

c.

Dependent on the angle A and B

d.

Cannot be determined from given data

## Question 49

Mathematics
Edit

### Question

MCQ▾

One side of a regular polygon with vertices on a circle subtends an angle of at the centre of this circle. This polygon is

### Choices

Choice (4)Response

a.

10 sided

b.

18 sided

c.

12 sided

d.

6 sided

## Question 50

Edit

### Question

MCQ▾

In the given figure, X is a point in the interior of parallelogram ABCD. If the area of parallelogram , then area of area of = ________.

### Choices

Choice (4)Response

a.

b.

c.

d.