IMO Mathematics Olympiad Class 9: Questions 279  283 of 919
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Question number: 279
Question
On plotting the points A (3, 6), B (9, 6), C (5, 8), D (11, 8), E (11, 3), F (9, 1), G (3, 1) and joining AB, AC, BD, CD, DE, BF, AG, EF, GF Which of the following figure is obtained?
Choices
Choice (4)  Response  

a.  Teardrop 

b.  Can 

c.  Cube 

d.  Chord 

Question number: 280
Question
If the coordinate of the two points are A (2, 6) and B (4, 5) then (abscissa of A)  (abscissa of B) is ________
Choices
Choice (4)  Response  

a.  1 

b.  2 

c.  1 

d.  2 

Question number: 281
Question
The ratio between the length and the breadth of a rectangular park is. If a man cycling along the boundary of the park at the speed of 15 km/hr completes one round in 12 minutes, then the area of the park is________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 282
» 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 3: 4. Find the number of sides of each polygon.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 283
Question
In the medians XC, YB and ZA pass through O. If , then YB is ________
Choices
Choice (4)  Response  

a.  19 

b.  11 

c.  26 

d.  21 
