What is the length of GD?
What is the length of JD?

Answer:
10, 12
Step-by-step explanation:
Sides of a triangle are bisected when creating a centroid. Also, the segments are split by 1/3:2/3 ratio at the centroid. 10 = 10. 6 is 1/3 of the entire segment, leaving the other portion to be 12.