Proof: Square is Equilateral 2

Let's prove the following theorem:

Proof:

Proof Table

#	Claim	Reason
1	WXYZ is a rectangle	if WXYZ is a square, then WXYZ is a rectangle (Square Property)
2	WXYZ is a parallelogram	if WXYZ is a rectangle, then WXYZ is a parallelogram (Rectangle Property)
3	distance WX = distance XY	if WXYZ is a square, then distance WX = distance XY (Square Property)
4	distance WZ = distance XY	if WXYZ is a parallelogram, then distance WZ = distance XY (If Parallelogram Then Sides Congruent)
5	distance WX = distance WZ	if distance WX = distance XY and distance WZ = distance XY, then distance WX = distance WZ (Transitive Property of Equality Variation 1)
6	distance ZW = distance WX	if distance WX = distance WZ, then distance ZW = distance WX (Distance Property 5)

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