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)
Ans:
(i) similar
(ii) similar
(iii) equilateral
(iv) equal, proportional
2. Give two different examples of pair of:
(i) similar figures
(ii) non-similar figures
Answer:
(i) Two different examples of pair of similar figures are:
(a) Any two rectangles
(b) Any two squares
(ii) Two different examples of pair of non-similar figures are:
(a) A scalene and an equilateral triangle
(b) An equilateral triangle and a right angled triangle
(i) Two different examples of pair of similar figures are:
(a) Any two rectangles
(b) Any two squares
(ii) Two different examples of pair of non-similar figures are:
(a) A scalene and an equilateral triangle
(b) An equilateral triangle and a right angled triangle