K is the midpoint of GI and HJ . Complete the proof that △GJ K ≅ △IH K . J G H I K Statement Reason 1 K is the midpoint of GI Given 2 K is the midpoint of HJ Given 3 GK ≅ IK Definition of midpoint 4 HK ≅ JK Additive Property of Length All right angles are congruent Definition of angle bisector Definition of equilateral triangle Definition of midpoint Vertical Angle Theorem 5 ∠GKJ ≅ ∠HKI Vertical Angle Theorem 6 △GJ K ≅ △IH K SAS