Lines, Angles and Quadrilaterals (IMO Mathematics Olympiad Class 9): Questions 79  83 of 126
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Question number: 79
» Lines, Angles and Quadrilaterals
Question
Three parallel lines are cut by two transversals as shown in the given figure. If , and , then the length of EF is ________
Choices
Choice (4)  Response  

a.  2 cm 

b.  4 cm 

c.  3.5 cm 

d.  3 cm 

Question number: 80
» Lines, Angles and Quadrilaterals
Question
In the figure, and then ∠4 is________
Choices
Choice (4)  Response  

a.  172˚ 

b.  134˚ 

c.  126˚ 

d.  136˚ 

Question number: 81
» Lines, Angles and Quadrilaterals
Question
The angles P, Q, R, S in the parallelogram PQRS are________
Choices
Choice (4)  Response  

a.  90˚, 60˚, 90˚, 60˚ 

b.  90˚, 90˚, 90˚, 90˚ 

c.  50˚, 60˚, 30˚, 40˚ 

d.  50˚, 45˚, 80˚, 15˚ 

Question number: 82
» Lines, Angles and Quadrilaterals
Question
The given figure WXYZ is a parallelogram then the values of and are________
Choices
Choice (4)  Response  

a.  78˚, 35˚ 

b.  20˚, 40˚ 

c.  50˚, 60˚ 

d.  35˚, 70˚ 

Question number: 83
» Lines, Angles and Quadrilaterals
Question
The measurement of a window is , if 6 doors are to be fixed in that window in two rows, measurements of each door should be________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

