Lines, Angles and Quadrilaterals (IMO Mathematics Olympiad (SOF) Class 9): Questions 11  16 of 126
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Question number: 11
» Lines, Angles and Quadrilaterals
Question
In the figure below, lines WX and YZ intersect at O. if and , then are equal to ________
Choices
Choice (4)  Response  

a.  150˚ 

b.  154˚ 

c.  190˚ 

d.  158˚ 

Question number: 12
» Lines, Angles and Quadrilaterals
Question
If , and, then x and y respectively are ________
Choices
Choice (4)  Response  

a.  65˚, 25˚ 

b.  90˚, 30˚ 

c.  35˚, 55˚ 

d.  45˚, 35˚ 

Question number: 13
» Lines, Angles and Quadrilaterals
Question
In the given figure, XY is a mirror, AB is the incident ray and BC is the reflected ray. If ∠ABC = 116˚, then ∠CBY is ________
Choices
Choice (4)  Response  

a.  32˚ 

b.  23˚ 

c.  43˚ 

d.  21˚ 

Question number: 14
» Lines, Angles and Quadrilaterals
Question
In the given figure and, then value of x is________.
Choices
Choice (4)  Response  

a.  140˚ 

b.  125˚ 

c.  135˚ 

d.  105˚ 

Question number: 15
» Lines, Angles and Quadrilaterals
Question
How many sides does a regular polygon have, each angle of which is of measure 135˚?
Choices
Choice (4)  Response  

a.  6 

b.  9 

c.  8 

d.  7 

Question number: 16
» Lines, Angles and Quadrilaterals
Question
Two supplementary angles differ by 94˚. Then the angles are ________
Choices
Choice (4)  Response  

a.  67˚, 113˚ 

b.  120˚, 60˚ 

c.  142˚, 38˚ 

d.  137˚, 43˚ 
