Question

The polygons are similar. Find the value of x.
bigger polygon has x, 16, and 20
smaller has 15,12, and 18

Answer 1

12/16 = 3/4
18/20 ≠ 3/4
so they are not similar.

Answer 2

16:20 = 12:15 ... the larger sides are 4/3 times the smaller sides

x = 4/3 * 18

Answer 3

27