# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 306 - 311 of 989

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## Question number: 306

Mathematics
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### Question

MCQ▾

In the given figure, two chord AB and CD of a circle intersect each other at a point O such that . Then find .

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 307

Mathematics
Edit

### Question

MCQ▾

In the following figure, O is the center of the circle. Find the value of x.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 308

Mathematics
Edit

### Question

MCQ▾

C is the center of the circle as shown in the diagram below. Then is equal to

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 309

Mathematics
Edit

### Question

MCQ▾

In the given figure, two chord AB and CD of a circle intersect each other at a point O such that . Then find .

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 310

Mathematics
Edit

Appeared in Year: 1960

### Question

MCQ▾

In the given figure, is inscribed in a circle with center O. If the length of the chord YZ is equal to the radius of the circle OY then = ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 311

Mathematics
Edit

### Question

MCQ▾

In a quadrilateral ABCD, the diagonals AC and BD are equal and perpendicular to each other. Then ABCD is a:

### Choices

Choice (4)Response

a.

Parallelogram

b.

Square

c.

Rhombus

d.

Trapezium