MathematicsBasic Geometry (NTSE Stage2 (NationalLevel) ScholasticAptitude & Language Comprehension): Questions 19  21 of 21
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Question number: 19
» Mathematics » Basic Geometry
Question
ABCD is a quadrilateral whose diagonals intersect each other at the point O such that OA = OB = OD. If ∠OAB = 30°, then the measures of ∠ODA is
Choices
Choice (4)  Response  

a.  60° 

b.  90° 

c.  45° 

d.  30° 

Question number: 20
» Mathematics » Basic Geometry
Question
In the given figure, are congruent triangles. , then find the value of .
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 

Question number: 21
» Mathematics » Basic Geometry
Appeared in Year: 2013
Question
ABCD is a square with side a. With centers A, B, C and D four circles are drawn such that each circle touches externally two of the remaining three circles. Let 5 be the area of the region in the interior of the square and exterior of the circles. Then the maximum value of 8 is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

