Step 1: Identify the relationship between JG and GF
G is the centroid of triangle DEF. JG is a segment from the vertex to the centroid. GF is a segment from the centroid to the midpoint of the opposite side. The centroid divides each median into a ratio of 2:1. Therefore, GF is twice the length of JG.
Step 2: Set up the equation
Given that GF = 58, and GF = 2 * JG, we can set up the equation: 58 = 2 * JG
Step 3: Solve for JG
Divide both sides of the equation by 2: JG = 58 / 2 = 29