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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)

2. Give two different examples of pair of

(i) similar figures.

(ii) non-similar figures.

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