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.Read More

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