NCERT Solutions, Exercise 6.1: Triangles, Class 10 (Mathematics) Class 10 Notes | EduRev

Class 10 : NCERT Solutions, Exercise 6.1: Triangles, Class 10 (Mathematics) Class 10 Notes | EduRev

 Page 1


Mathematics 
(www.tiwariacademy.com) 
(Chapter – 6) (Triangles)  
(Class – X) 
 
www.tiwariacademy.com  
1 
Exercise 6.1 
Question 1:  
Fill in the blanks using correct word given in the brackets: -  
(i) All circles are __________. (congruent, similar)  
(ii) All squares are __________. (similar, congruent)  
(iii) All __________ triangles are similar. (isosceles, equilateral)  
(iv) Two polygons of the same number of sides are similar, if (a) their corresponding 
angles are __________ and (b) their corresponding sides are __________. (equal, 
proportional)  
 
Answer 1:  
(i) Similar  
(ii) Similar  
(iii) Equilateral  
(iv) (a) Equal  
      (b) Proportional  
  
Question 2:  
Give two different examples of pair of  
(i) Similar figures (ii)Non-similar figures  
 
Answer 2:  
(i) Two equilateral triangles with sides 1 cm and 2 cm  
  
Two squares with sides 1 cm and 2 cm  
Page 2


Mathematics 
(www.tiwariacademy.com) 
(Chapter – 6) (Triangles)  
(Class – X) 
 
www.tiwariacademy.com  
1 
Exercise 6.1 
Question 1:  
Fill in the blanks using correct word given in the brackets: -  
(i) All circles are __________. (congruent, similar)  
(ii) All squares are __________. (similar, congruent)  
(iii) All __________ triangles are similar. (isosceles, equilateral)  
(iv) Two polygons of the same number of sides are similar, if (a) their corresponding 
angles are __________ and (b) their corresponding sides are __________. (equal, 
proportional)  
 
Answer 1:  
(i) Similar  
(ii) Similar  
(iii) Equilateral  
(iv) (a) Equal  
      (b) Proportional  
  
Question 2:  
Give two different examples of pair of  
(i) Similar figures (ii)Non-similar figures  
 
Answer 2:  
(i) Two equilateral triangles with sides 1 cm and 2 cm  
  
Two squares with sides 1 cm and 2 cm  
Mathematics 
(www.tiwariacademy.com) 
(Chapter – 6) (Triangles)  
(Class – X) 
 
www.tiwariacademy.com  
2 
  
(ii) Trapezium and square  
  
Triangle and parallelogram  
  
  
 
Question 3:  
State whether the following quadrilaterals are similar or not:  
  
 
Answer 3:  
Quadrilateral PQRS and ABCD are not similar as their corresponding sides are 
proportional, i.e. 1:2, but their corresponding angles are not equal.  
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