Triangles and Circles (IMO Mathematics Olympiad Class 9): Questions 72  74 of 79
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Question number: 72
» Triangles and Circles
Question
In the figure , and . If the exterior angle RPU is, then the angle TSR is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 73
» Triangles and Circles
Question
ABC is an equilateral triangle of side. P, Q and R are midpoints of AB, CA and BC respectively. The area of triangle PQR is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 74
» Triangles and Circles
Question
In an isosceles triangle ABC, with , the bisectors of and intersect each other at O. join A to O, then________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

