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TOPICS
Exercise - 6.1

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)

Solution :-
```(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.

Solution :-
```(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.
```
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