IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 348  352 of 929
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Question number: 348
Question
Which of the points A (0,6), B (2,4), C (4,0), D (0, 2), E (0, 5), F (4, 4) do lie on the Yaxis?
Choices
Choice (4)  Response  

a.  A, F, E 

b.  B and E only 

c.  A and D only 

d.  A, D, E 

Question number: 349
Question
In triangle ABC, the altitude from A to BC meets BC at D, and the altitude from B to CA meets AD at H. if , and , if then the length of HD is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 350
» 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: 351
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: 352
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.  4 cm and 20 cm 

b.  5 cm and 19 cm 

c.  12 cm and 4 cm 

d.  16 cm and 8 cm 
