Collinear Points Property
Commutative Property Variation 1
Substitution 2
Substitution 6
Transitive Property of Equality Variation 1
Right Angles are Equal
Transitive Property of Equality Variation 2
Distance Property 1
Distance Property 2
Distance Property 3
Congruent Triangles to Distance 3
SAS Sides

Proof: Distance Property 3

Let's prove the following theorem:

if distance AB = distance CD, then distance BA = distance DC

C D A B

Proof:

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Given
1 distance AB = distance CD
Proof Table
# Claim Reason
1 distance BA = distance CD if distance AB = distance CD, then distance BA = distance CD
2 distance BA = distance DC if distance BA = distance CD, then distance BA = distance DC
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