IMO Mathematics Olympiad (SOF) Class 9: Questions 275  279 of 919
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Question number: 275
» Lines, Angles and Quadrilaterals
Question
The angle between two altitudes of a parallelogram through the vertex of an obtuse angle of the parallelogram is 60°, Then the angles of the parallelogram is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 276
Question
In the given figure, the area of shaded portion is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 277
Question
In triangle HKM, the altitude from H to KM meets KM at J, and the altitude from K to HM meets HJ at S. if , and , if then the length of SJ is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 278
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: 279
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 
