Proof: Distance Property 4

Let's prove the following theorem:

Proof:

Proof Table

#	Claim	Reason
1	distance AB = distance BA	distance AB = distance BA (Distance Equality Property)
2	distance BA = distance CD	if distance AB = distance BA and distance AB = distance CD, then distance BA = distance CD (Transitive Property of Equality Variation 2)
3	distance CD = distance DC	distance CD = distance DC (Distance Equality Property)
4	distance DC = distance BA	if distance BA = distance CD and distance CD = distance DC, then distance DC = distance BA (Transitive Property of Equality Variation 3)

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