IMO- Mathematics Olympiad (SOF) Class 9: Questions 120 - 124 of 919

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Question number: 120

» Lines, Angles and Quadrilaterals

MCQ▾

Question

If l, m, n are three parallel lines and the transversals t1 and t2 cut the lines l, m, n at the points A, B, C and P, Q, R as shown in the figure, then________.

Image shows the three parallel lines

Image Shows the Three Parallel Lines

Image defines the three parallel lines and two transversals t1 and t2 cut the lines

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 121

» Lines, Angles and Quadrilaterals

MCQ▾

Question

The angles of quadrilateral are in the ratio . All angles of a quadrilaterals are________

Choices

Choice (4) Response

a.

72˚, 36˚, 108˚, 144˚

b.

36˚, 60˚, 20˚, 156˚

c.

145˚, 20˚, 30˚, 60˚

d.

108˚, 144˚, 45˚, 15˚

Question number: 122

» Lines, Angles and Quadrilaterals

MCQ▾

Question

In figure PQ, RS and TU are three lines concurrent at A. If ∠PAU = 6y˚, ∠QAS = 4y˚ and ∠RAT = 2y˚, the value of y is________

 Image PQ, RS and TU are three lines concurrent at A

Image PQ, RS and TU Are Three Lines Concurrent at A

Image PQ, RS and TU are three lines concurrent at A and find the value of y

Choices

Choice (4) Response

a.

15

b.

25

c.

30

d.

20

Question number: 123

» Lines, Angles and Quadrilaterals

MCQ▾

Question

The complementary angle of an angle is one fourth of itself. Then the angle of its complement are________

Choices

Choice (4) Response

a.

45˚, 45˚

b.

72˚, 18˚

c.

60˚, 30˚

d.

55˚, 35˚

Question number: 124

» Lines, Angles and Quadrilaterals

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Isosceles

b.

Acute

c.

Obtuse

d.

Question does not provide sufficient data or is vague

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