IMO Mathematics Olympiad (SOF) Class 9: Questions 201  205 of 919
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Question number: 201
Question
If one leg of an isosceles rightangles triangle is increased by 6 cm and the other leg is increased by 4 cm, then change in area of the triangle is 24 sq. cm. find the length of the leg of the original triangle.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 202
» Lines, Angles and Quadrilaterals
Question
In the given figure, the value of y is ________
Choices
Choice (4)  Response  

a.  24 

b.  10 

c.  22 

d.  20 

Question number: 203
» Lines, Angles and Quadrilaterals
Question
In the given figure, , and , find
Choices
Choice (4)  Response  

a.  50˚ 

b.  45˚ 

c.  55˚ 

d.  60˚ 

Question number: 204
» Lines, Angles and Quadrilaterals
Question
Ray OE bisects ∠AOB and OF is the ray opposite OE, then ∠FOB = ________
Choices
Choice (4)  Response  

a.  ∠BOE 

b.  ∠FOA 

c.  ∠AOE 

d.  ∠FOE 

Question number: 205
» Lines, Angles and Quadrilaterals
Question
In the figure, p is greater than q by one third of a right angle. Find the values of p and q.
Choices
Choice (4)  Response  

a.  p = 115˚ and q = 65˚ 

b.  p = 75˚ and q = 105˚ 

c.  p = 105˚ and q = 75˚ 

d.  p = 65˚ and q = 115˚ 
