# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 17 - 20 of 989

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## Question 17

Mathematics
Edit

### Question

MCQ▾

An angle which is more than and less than is called

### Choices

Choice (4)Response

a.

Complete angle

b.

Obtuse angle

c.

Right angle

d.

Reflex angle

## Question 18

Mathematics
Edit

### Question

MCQ▾

The radius of a circle is 2.5 cm. AB and CD are two parallel chords 2.7 cm apart. If cm then CD is equal to

### Choices

Choice (4)Response

a.

5.2 cm

b.

3 cm

c.

7.3 cm

d.

8 cm

## Question 19

Mathematics
Edit

### Question

MCQ▾

Two adjacent angles whose sum is is called

### Choices

Choice (4)Response

a.

Linear pair

b.

Complementary angles

c.

Vertically opposite angles

d.

Question does not provide sufficient data or is vague

## Question 20

Mathematics
Edit

### Question

MCQ▾

In the figure find x if .

### Choices

Choice (4)Response

a.

b.

c.

d.