IMO Mathematics Olympiad Class 9: Questions 155  159 of 919
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Question number: 155
» Lines, Angles and Quadrilaterals
Question
If two complementary angles are in the ratio 17: 13, then the angles are________
Choices
Choice (4)  Response  

a.  25˚, 65˚ 

b.  55˚, 35˚ 

c.  60˚, 30˚ 

d.  51˚, 39˚ 

Question number: 156
» Lines, Angles and Quadrilaterals
Question
In the figure line a line b line c. their transversal line t1 and line t2, cut them at point X, Y, Z and J, K, L respectively. Point Y is the midpoint of segment XZ. If find and
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 157
Question
If the perimeter of a rectangular garden plot is 80 metres, which of the following could be the length of one of its sides?
I. 30 metres
II. 40 metres
III. 50 metres
Choices
Choice (4)  Response  

a.  III only 

b.  I only 

c.  II only 

d.  I and II 

Question number: 158
» Lines, Angles and Quadrilaterals
Question
The supplement of an angle is 50 more than six times its complement. Find the measure of the angle
Choices
Choice (4)  Response  

a.  65˚ 

b.  56˚ 

c.  82˚ 

d.  38˚ 

Question number: 159
» Lines, Angles and Quadrilaterals
Question
The angles of a triangle are in the ratio . The triangle is ________
Choices
Choice (4)  Response  

a.  Right 

b.  Acute 

c.  Isosceles 

d.  Scalene 
