Answer
△WZD and △SDZ are congruent using Postulate 4-1 Side-Side-Side (SSS) Postulate
Work Step by Step
Proof:
Given: WZ ≅ ZS ≅ SD ≅ DW
ZD ≅ DZ - Reflexive Property of Congruence
△WZD ≅ △SDZ - Postulate 4-1 Side-Side-Side (SSS) Postulate
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