Lines, Angles and Quadrilaterals (IMO Mathematics Olympiad (SOF) Class 9): Questions 90  95 of 126
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 919 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 450.00 or
Question number: 90
» 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: 91
» 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: 92
» 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: 93
» 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: 94
» 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˚ 

Question number: 95
» Lines, Angles and Quadrilaterals
Question
If two supplementary angles are in the ratio 2: 3, then the angles is ________
Choices
Choice (4)  Response  

a.  140˚, 80˚ 

b.  185˚, 50˚ 

c.  160˚, 36˚ 

d.  72˚, 108˚ 
