IMO Mathematics Olympiad (SOF) Class 9: Questions 168  172 of 919
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Question number: 168
» Lines, Angles and Quadrilaterals
Question
The measure of an angle is twice times the measure of its supplementary angle. Then the angles are________
Choices
Choice (4)  Response  

a.  40˚, 160˚ 

b.  18˚, 72˚ 

c.  50˚, 200˚ 

d.  120˚, 60˚ 

Question number: 169
» Lines, Angles and Quadrilaterals
Question
In figure, lines a and b intersect at O. if, the value of y, z and u respectively is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 170
» Lines, Angles and Quadrilaterals
Question
In a parallelogram PQRS, , then the measurement of ∠S is ________
Choices
Choice (4)  Response  

a.  75˚ 

b.  95˚ 

c.  100˚ 

d.  65˚ 

Question number: 171
» Lines, Angles and Quadrilaterals
Question
The angles of quadrilateral are in the ratio . All angles of a quadrilaterals are________
Choices
Choice (4)  Response  

a.  30˚, 90˚, 60˚, 20˚ 

b.  30˚, 60˚, 45˚, 15˚ 

c.  36˚, 60˚, 108˚, 156˚ 

d.  45˚, 20˚, 30˚, 60˚ 

Question number: 172
Question
ABCD is a trapezium, in which and E & F are points on AD & BC respectively. BD is joined. If , , and , then values of x and y are ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

