# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 214 - 219 of 929

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## Question number: 214

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MCQ▾

### Question

Diagonals of a rectangle ABCD intersect at O. if , then ∠DCO is ________

### Choices

Choice (4)Response

a.

70˚

b.

55˚

c.

35˚

d.

110˚

## Question number: 215

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MCQ▾

### Question

In the given figure, BO, CO is angle bisectors of external angles of △ABC. Then BOC is ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 216

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MCQ▾

### Question

In the figure below, lines XY and MN intersect at O. if and , then are equal to ________

### Choices

Choice (4)Response

a.

130˚

b.

90˚

c.

126˚

d.

180˚

## Question number: 217

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MCQ▾

### Question

Triangle PAB is formed by three tangents to circle with center O and , then angle ACB equals ________ Triangle PAB is Formed by 3 Tangents to Circle with Center O

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 218

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MCQ▾

### Question

An exterior angle of a triangle is and the measure of the two remote interior angles are 25 degree and degree. x = ________. The Exterior Angle of a Triangle and 2 Interior Angles Measure

### Choices

Choice (4)Response

a.

24

b.

29

c.

20

d.

25

## Question number: 219

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MCQ▾

### Question

The number of spherical bullets each 0.6 cm in diameter be made out of a rectangular solid is ________

### Choices

Choice (4)Response

a.

10250

b.

10200

c.

10500

d.

10550

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