The aim of this question is to find the length of a side of a triangle that is similar to another triangle whose lengths of the sides are given. This question depends on the concepts of triangle geometry. Two triangles are said to be similar if one of the following criteria is met between those two triangles.
- Two pairs of the corresponding angles of both triangles are equal.
- Three sides of both triangles are equal.
- Two corresponding sides of both triangles are proportional to each other, and the angle between them is equal.