IMO Mathematics Olympiad Class 9: Questions 163  167 of 919
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Question number: 163
» Lines, Angles and Quadrilaterals
Question
XYZ is an equilateral triangle for side. J, K and L are midpoints of XY, YZ and XZ respectively. The area of triangle JKL is (in) ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 164
» Lines, Angles and Quadrilaterals
Question
The supplementary angle of an angle is one fifth of itself. Then the angle of its supplement are________
Choices
Choice (4)  Response  

a.  150˚, 30˚ 

b.  160˚, 20˚ 

c.  160˚, 130˚ 

d.  150˚, 45˚ 

Question number: 165
Question
In the adjoining figure, point P the intersection of lines l1 and l2 has coordinates (a, b) as shown here. Which of the following could be the ordered pair (a, b)?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 166
» Lines, Angles and Quadrilaterals
Question
The supplementary angle of an angle is one third of itself. Then the angle of its supplement are________
Choices
Choice (4)  Response  

a.  120˚, 360˚ 

b.  60˚, 180˚ 

c.  135˚, 45˚ 

d.  60˚, 120˚ 

Question number: 167
Question
Find the value of
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

