Lines, Angles and Quadrilaterals (IMO Mathematics Olympiad (SOF) Class 9): Questions 22  27 of 126
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Question number: 22
» Lines, Angles and Quadrilaterals
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: 23
» Lines, Angles and Quadrilaterals
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 

Question number: 24
» Lines, Angles and Quadrilaterals
Question
The given figure PQRS is a parallelogram then the values of and are________
Choices
Choice (4)  Response  

a.  45˚, 60˚ 

b.  70˚, 35˚ 

c.  35˚, 70˚ 

d.  60˚, 45˚ 

Question number: 25
» Lines, Angles and Quadrilaterals
Question
In the figure, a is greater than b by one fifth of a right angle. Then a, b respectively are________
Choices
Choice (4)  Response  

a.  120˚, 110˚ 

b.  50˚, 120˚ 

c.  130˚, 60˚ 

d.  99˚, 81˚ 

Question number: 26
» Lines, Angles and Quadrilaterals
Question
In the figure, if , then x = ________
Choices
Choice (4)  Response  

a.  60˚ 

b.  70˚ 

c.  45˚ 

d.  55˚ 

Question number: 27
» Lines, Angles and Quadrilaterals
Question
The value of x in the given figure is ________
Choices
Choice (4)  Response  

a.  118˚ 

b.  120˚ 

c.  114˚ 

d.  116˚ 
