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Which property makes congruence an equivalence relation?

AAssociative and transitive only
BReflexive and antisymmetric only
CSymmetric and commutative only
DReflexive, symmetric and transitive
Answer & Solution
Correct answer: D. Reflexive, symmetric and transitive
A figure is congruent to itself, congruence works both ways, and chains of congruence carry over, so all three properties hold.
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