Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 16  21 of 989
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Question number: 16
Question
MCQ▾In the parallelogram ABCD, . The altitudes corresponding to the sides AE and CF are respectively 6 cm and 16 cm. Find BC.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 17
Question
MCQ▾An angle which is more than and less than is called
Choices
Choice (4)  Response  

a.  Complete angle  
b.  Obtuse angle  
c.  Right angle  
d.  Reflex angle 
Question number: 18
Question
MCQ▾The radius of a circle is 2.5 cm. AB and CD are two parallel chords 2.7 cm apart. If cm then CD is equal to
Choices
Choice (4)  Response  

a.  5.2 cm  
b.  3 cm  
c.  7.3 cm  
d.  8 cm 
Question number: 19
Question
MCQ▾Two adjacent angles whose sum is is called
Choices
Choice (4)  Response  

a.  Linear pair  
b.  Complementary angles  
c.  Vertically opposite angles  
d.  Question does not provide sufficient data or is vague 
Question number: 20
Question
MCQ▾In the figure find x if .
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 21
Question
MCQ▾AB is a chord of a circle of radius 3.4 cm and P is a point on it which divided it into two parts in the ratio 3: 5. If P is 2.7 cm distant from the center O, the length of AB is
Choices
Choice (4)  Response  

a.  4.24 cm  
b.  9.16 cm  
c.  5.9 cm  
d.  2.12 cm 