Answer:
Yes , it is possible that ∠ G is congruent to ∠ K .
Explanation:
As 
In ΔIKH and ΔIGJ .
(1) IJ = IH (Given)
(2)∠KIH = ∠GIJ (Common angle of both triangles.)
(3) IK=IG
(As given IJ = IH , JK = HG 
IJ + JK = IH + HG 
IK = IG ) 
Thus by using SAS congurence property .
ΔIKH ≅ ΔIGJ 
Thus 
∠G = ∠K 
(By using the corresponding sides of the congurent triangles .)
Thus ∠G = ∠K