IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 120 - 125 of 931

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Question 120

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Question

MCQ▾

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

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Choices

Choice (4)Response
a.
b.
c.
d.

Question 121

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Question

MCQ▾

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 122

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Question

MCQ▾

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

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Choices

Choice (4)Response
a.15
b.20
c.25
d.30

Question 123

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Question

MCQ▾

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.55˚, 35˚
d.60˚, 30˚

Question 124

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Question

MCQ▾

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

Choices

Choice (4)Response
a.Acute
b.Isosceles
c.Obtuse
d.None of the above

Question 125

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Question

MCQ▾

The given figure PQRS is a parallelogram then the values of and are________

Image is parallelogram

Image is Parallelogram

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Choices

Choice (4)Response
a.35˚, 70˚
b.60˚, 45˚
c.45˚, 60˚
d.70˚, 35˚