Question-1 :- Fill in the blanks using the correct word given in 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)
(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.
(i) (a)Two Equilateral triangles with sides 1 cm and 2 cm (b)Two Squares with sides 1 cm and 2 cm
(ii) (a)Trapezium & Square (b)Triangle and Paralleogram
Question-3 :- State whether the following quadrilaterals are similar or not:Solution :-
Quadrilateral PQRS and ABCD are not similar because their corresponding sides are proportional, i.e, 1:2 but their corresponding angles are not equal.