IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 580  582 of 1022
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Question number: 580
Question
Two chimneys 18 m and 13 m high stand upright on a ground. If their feet are 12 m apart, then the distance between their tops is ________.
Choices
Choice (4)  Response  

a.  5 m 

b.  31 m 

c.  13 m 

d.  18 m 

Question number: 581
Question
Which of the following statements is false?
Choices
Choice (4)  Response  

a.  If two sides and one angle of a triangle are equal to the corresponding two sides and the angle of another triangle, then the two triangles are congruent. 

b.  Two triangles having same area are congruent. 

c.  In the hypotenuse of one right triangle is equal to the hypotenuse of another triangle, then the triangles are congruent. 

d.  All a. , b. and c. are correct 

Question number: 582
Question
In the figure (not drawn to scale), ADF and BEF are triangles and EC = ED, find x.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

