IMO Mathematics Olympiad (SOF) Class 9: Questions 206  211 of 919
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Question number: 206
» Lines, Angles and Quadrilaterals
Question
If two supplementary angles are in the ratio 13: 5, then the angles is ________
Choices
Choice (4)  Response  

a.  125˚, 55˚ 

b.  145˚, 35˚ 

c.  130˚, 50˚ 

d.  120˚, 60˚ 

Question number: 207
» Lines, Angles and Quadrilaterals
Question
In the given figure, ∠COD is a right angle. ∠AOC and ∠BOD are in the ratio of 3: 2, thus ∠BOD measures________
Choices
Choice (4)  Response  

a.  50˚ 

b.  40˚ 

c.  54˚ 

d.  36˚ 

Question number: 208
» Lines, Angles and Quadrilaterals
Question
Two supplementary angles differ by 58˚. Then the angles are ________
Choices
Choice (4)  Response  

a.  116˚, 64˚ 

b.  119˚, 61˚ 

c.  118˚, 62˚ 

d.  117˚, 63˚ 

Question number: 209
» Lines, Angles and Quadrilaterals
Question
ABC is an equilateral triangle for side . P, Q and R are midpoints of AB, CA and BC respectively. The area of triangle PQR is (in ) ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 210
Question
Remainder when is divided by is________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  0 

Question number: 211
» Lines, Angles and Quadrilaterals
Question
In the figure, form a linear pair and . Then a, b respectively are________
Choices
Choice (4)  Response  

a.  130˚, 50˚ 

b.  70˚, 120˚ 

c.  160˚, 70˚ 

d.  70˚, 110˚ 
