Select the sets of numbers in the following, which can form similar triangles.
(i) 3, 4, 6 (ii) 9, 12, 18 (iii) 8, 6, 12 (iv) 3, 4, 9 (v) 2, 4 ½, 4.
Consider the set of numbers in (i) and (ii).
Thus, the triangles with the side lengths given in sets (i) and (ii) form two similar triangles.