IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 158 - 163 of 929

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Question number: 158

» Lines, Angles and Quadrilaterals

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MCQ▾

Question

The angles of a triangle are in the ratio . The triangle is ________

Choices

Choice (4)Response

a.

Right

b.

Scalene

c.

Acute

d.

Isosceles

Question number: 159

» Lines, Angles and Quadrilaterals

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MCQ▾

Question

The measure of an angle is three times the measure of its supplementary angle. Then the angles are________

Choices

Choice (4)Response

a.

45˚, 135˚

b.

28˚, 72˚

c.

26˚, 154˚

d.

50˚, 100˚

Question number: 160

» Lines, Angles and Quadrilaterals

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MCQ▾

Question

In the given figure . Which of the following must be true?

Here in image define the l1 and l2 are parallel lines

Here in Image Define the l1 and l2 Are Parallel Lines

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 161

» Lines, Angles and Quadrilaterals

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MCQ▾

Question

If the bisectors of two adjacent angles A and B of a quadrilateral ABCD intersects at a point O such that , then value of k is ________

Image defines the bisectors of two adjacent angles A and B

Image Defines the Bisectors of Two Adjacent Angles a and B

Choices

Choice (4)Response

a.

5

b.

4

c.

3

d.

2

Question number: 162

» Lines, Angles and Quadrilaterals

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MCQ▾

Question

XYZ is an equilateral triangle for side . J, K and L are midpoints of XY, YZ and XZ respectively. The area of triangle JKL is (in ) ________

XYZ is an equilateral triangle for side given

XYZ is an Equilateral Triangle for Side Given

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 163

» Lines, Angles and Quadrilaterals

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MCQ▾

Question

The supplementary angle of an angle is one fifth of itself. Then the angle of its supplement are________

Choices

Choice (4)Response

a.

160˚, 130˚

b.

150˚, 30˚

c.

160˚, 20˚

d.

150˚, 45˚

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