IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 617  623 of 1022
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Question number: 617
» Practical Geometry  Lines and Angles
Question
If a, b and c are the sides of an equilateral triangle, then ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 618
Question
The three angles of a triangle are in the ratio 1: 2: 3, then the greatest angle is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 619
Question
If the area of a triangle with base x is equal to the area of a rectangle with width x and length double of width, then the altitude of the triangle is ________.
Choices
Choice (4)  Response  

a. 


b.  2x 

c.  6x 

d.  4x 

Question number: 620
Question
Two chimneys 16 m and 13 m high stand upright on a ground. If their feet are 4 m apart, then the distance between their tops is ________.
Choices
Choice (4)  Response  

a.  31 m 

b.  18 m 

c.  13 m 

d.  5 m 

Question number: 621
Question
The sides of a measure 6 cm, 8 cm and 10 cm. The area of the triangle is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

Question number: 622
Question
Dimpal earns Rs. 2100 per week working at an office. After taxes, her pay cheque is only 89 % of what she earned. What is the amount payable to Dimpal?
Choices
Choice (4)  Response  

a.  1969.00 

b.  Rs. 1836.00 

c.  Rs. 1869.00 

d.  Rs. 1962.00 

Question number: 623
Question
In the figure (not drawn to scale), ABC is an equilateral triangle and BDC is an isosceles triangle with DB = DC, find y.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

