Need help with Two-Column Proofs

[NeedMathHelp!]

I'm having a lot of trouble with two-column proofs! Can someone help me? I'm on the basic geometric proofs with the following reasons/theorems/postulates being used:
Congruence Supplement Theorem
Addition/Subtraction Property of Equality
Division/Multiplication Property of Equality
Linear Pair Postulate
Definition of Linear Pair
Congruent Parts of Congruent Triangles Congruent (CPCTC)
HL
SAS
SSS
AAS
ASA
Etc...

 

[NeedMathHelp!]

Here is my first practice problem:

Given: HI = 10, IJ = 10, IJ cong. JH
Prove: Line HI Cong. Line JH

Statements . . . . | . . . . Reasons


1. HI = 10, IJ = 10, IJ cong. JH . . .| . . 1. Given
2. Line HJ cong. Line IJ . . .| . . . 2. Transitive Property of Equality
3. HI cong. JH . . .| . . . ...........3. Distributive Property of Equality
4. Line HI cong. Line JH . . .| . . . 4. Definition of Congruent Segments