NCERT Class 10 Maths Chapter 6 Triangles Exercise 6.1

Chapter 6 Triangles Exercise 6.1

Question 1: Fill in the blanks using the correct word given in brackets:

i) All circles are similar. (congruent, similar)

ii) All squares are similar. (similar, congruent)

iii) All equilateral triangles are similar. (isosceles, equilateral)

iv) Two polygons of the same number of sides are similar, if (a) their corresponding angles are equal and (b) their corresponding sides are proportional. (equal, proportional)

Question 2: Give two different examples of pair of

i) similar figures.
Answer:
Circles of different radii
Squares of different sides

ii) non-similar figures.

Answer:
Square and circle
Triangle and rectangle

Question 3: State whether the following quadrilaterals are similar or not:

Answer: No. Though the pair of sides of both the quadrilaterals PQRS and ABCD are proportional, their corresponding angles are not equal. Hence, the quadrilaterals are not similar.