Final answer:
To find the length of bar (GI), use the fact that point H is the midpoint. Set up the equation x/2 + x/2 = x and solve it to find x = 2.
Step-by-step explanation:
To find the length of bar (GI), you need to use the fact that point H is the midpoint of bar (GI). This means that the distance from point G to point H is equal to the distance from point H to point I. Let's assume the length of bar (GI) is represented by variable 'x'. Since point H is the midpoint, the distance from G to H will be x/2 and the distance from H to I will also be x/2. Therefore, we can set up the equation x/2 + x/2 = x to find the length of bar (GI). Solving this equation, we get x = 2.