Lines, Angles and Quadrilaterals (IMO Mathematics Olympiad Class 9): Questions 6  10 of 126
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Question number: 6
» Lines, Angles and Quadrilaterals
Question
How many sides does a regular polygon have, each angle of which is of measure 108˚?
Choices
Choice (4)  Response  

a.  5 

b.  7 

c.  8 

d.  6 

Question number: 7
» Lines, Angles and Quadrilaterals
Question
DEF is an equilateral triangle for side . A, B and C are midpoints of DE, EF and DF respectively. The area of triangle JKL is (in ) ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 8
» Lines, Angles and Quadrilaterals
Question
In the figure the bisectors of ∠PQR and ∠PRQ intersect each other at O, then ∠QOR is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 9
» Lines, Angles and Quadrilaterals
Question
The given figure ABCD is a parallelogram then the values of and are________
Choices
Choice (4)  Response  

a.  35˚, 60˚ 

b.  55˚, 40˚ 

c.  70˚, 25˚ 

d.  25˚, 70˚ 

Question number: 10
» Lines, Angles and Quadrilaterals
Question
The measure of an angle is eight times the measure of its supplementary angle. Then the angles are________
Choices
Choice (4)  Response  

a.  65˚, 45˚ 

b.  63˚, 157˚ 

c.  140˚, 60˚ 

d.  20˚, 160˚ 
