IMO Mathematics Olympiad Class 9: Questions 247  251 of 919
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Question number: 247
Question
On plotting the points A (3, 3), B (9, 3), C (12, 10), D (5, 10) and joining AB, BC, CD, DA Which of the following figure is obtained?
Choices
Choice (4)  Response  

a.  Hexagon 

b.  Cross 

c.  Triangle 

d.  Parallelogram 

Question number: 248
Question
The and are right angles. If, and, then the length of QR and QS respectively is ________
Choices
Choice (4)  Response  

a.  15 cm, 12 cm 

b.  16 cm, 15 cm 

c.  25 cm, 12 cm 

d.  15 cm, 16 cm 

Question number: 249
Question
If the altitude of an equilateral triangle is , its area is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 250
Question
The Point identified in figure by the Coordinates (6, 4) is ________
Choices
Choice (4)  Response  

a.  Y 

b.  Z 

c.  W 

d.  X 

Question number: 251
Question
A triangle and a trapezoid are equal in area. They also have the same altitudes. If the base of the triangle is 18 inches, the mean of the parallel sides of the trapezoid is ________
Choices
Choice (4)  Response  

a.  36 inches 

b.  Not obtained from this data 

c.  18 inches 

d.  9 inches 
