Triangles and Circles (IMO Mathematics Olympiad Class 9): Questions 65  67 of 79
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Question number: 65
» Triangles and Circles
Question
In the medians PS, QT and RU pass through O. if, and then OS is ________
Choices
Choice (4)  Response  

a.  2.6 

b.  2.5 

c.  2.9 

d.  2.3 

Question number: 66
» Triangles and Circles
Question
PQRS is a cyclic Quadrilateral whose diagonals intersect at a point E. If, , , then =________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 67
» Triangles and Circles
Question
O, P, Q and R are four points on a circle. OQ and PR intersect at a point S such that and, then angle is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

