IMO Mathematics Olympiad Class 9: Questions 352  356 of 919
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Question number: 352
» Lines, Angles and Quadrilaterals
Question
Two regular polygons are such that the ratio between their no. of sides is 1: 2 and the ratio of measures of their interior angles is 4: 7. Find the number of sides of each polygon
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 353
Question
The area of a quadrilateral JKLM, in which , is an equilateral triangles of side 20 cm and is________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 354
Question
A1 is a circle of radius 8 cm, A2 is a circle of radius 12 cm. Shivangi wants the two circles to touch tangentially. She knows that there are two possibilities for the distance between their centres. What are these two distances?
Choices
Choice (4)  Response  

a.  5 cm and 19 cm  
b.  4 cm and 20 cm  
c.  16 cm and 8 cm  
d.  12 cm and 4 cm 
Question number: 355
» Linear Equations in Two Variables
Question
In the figure, the value of x if , is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 356
Question
Triangle PAB is formed by three tangents to circle with center O and , then angle AOB equals ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
