IMO Mathematics Olympiad Class 8: Questions 281  288 of 1029
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Question number: 281
» Quadrilaterals and Practical Geometry
Question
The exterior angle of a regular polygon is onehalf of its interior angle. How many sides has the polygon?
Choices
Choice (4)  Response  

a.  5 

b.  8 

c.  4 

d.  6 

Question number: 282
» Quadrilaterals and Practical Geometry
Question
Sum of the exterior angle of quadrilateral is________.
Choices
Choice (4)  Response  

a.  120 

b.  450 

c.  360 

d.  180 

Question number: 283
Question
The simple interest at y % for y years will be Rs. y on a sum of________.
Choices
Choice (4)  Response  

a.  Rs. 

b.  Rs. 

c.  Rs. 

d.  Rs. 

Question number: 284
Question
The simple interest at a % for a years will be Rs. 2a on a sum of________.
Choices
Choice (4)  Response  

a.  Rs. 

b.  Rs. 

c.  Rs. 

d.  Rs. 

Question number: 285
» Quadrilaterals and Practical Geometry
Question
The exterior angle of a regular polygon is onefifth of its interior angle. How many sides has the polygon?
Choices
Choice (4)  Response  

a.  8 

b.  4 

c.  12 

d.  10 

Question number: 286
» Quadrilaterals and Practical Geometry
Question
Which of the following quadrilateral has four right angles?
Choices
Choice (4)  Response  

a.  Square 

b.  Rectangle 

c.  Rhombus 

d.  Square and rectangle 

Question number: 287
» Quadrilaterals and Practical Geometry
Question
If a quadrilateral has all equal sides and parallel opposite sides, it is called________.
Choices
Choice (4)  Response  

a.  Rectangle 

b.  Parallelogram 

c.  Rhombus 

d.  Kite 

Question number: 288
» Quadrilaterals and Practical Geometry
Question
The number of sides of a regular polygon whose each interior angle has a measure of is________.
Choices
Choice (4)  Response  

a.  3 

b.  8 

c.  6 

d.  5 
