How i solve all the question of Trianlges of exercise 6.1 of question no.1 of class 10th. How i solve in easy way please help me for this problem Fill in the blanks using correct word given in the 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)