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)


Exercise 6.1