Transitive Property of Equality Variation 2
Angle Symmetry Example 2
Distance Property 2
Distance Property 1
Collinear Then 180
Subtract Both Sides
Add Term to Both Sides 6
Subtract Both Sides 2
Add Term to Both Sides 7
Transitive Property of Equality Variation 1
Vertical Angles
Angle Addition Theorem
Collinear Angles Property 9
Collinear Angles B
Exterior Angle
Exterior Angle B
Collinear Angles Property 10
Collinear Angles Property 3
Collinear Angles Property 3 B
Collinear Angles Property 3 C
alternate interior angles then parallel
ParallelThenAIA
Parallel Then Aia 2
Converse of the Supplementary Angles Theorem
Commutative Property Example 2
Commutative Property Variation 1
Substitution 2
Substitution 8
Substitution Example 10
Supplementary Then 180
Parallel Then Interior Supplementary
Paralleltheninteriorshort
Subtraction Example 2
Add Number to Both Sides
Add Number to Both Sides 2
Rectangle Right Angles 2
Rectangle Right Angles 3

Proof: Distance Property 2

Let's prove the following theorem:

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

C D A B

Proof:

View as a tree | View dependent proofs | Try proving it

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