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Triangles T1 and T2 are related when T1 is congruent to T2. This relation is what?
ASymmetric, not transitive
BReflexive, not symmetric
CTransitive, not reflexive
DAn equivalence relation
Answer & Solution
Correct answer: D. An equivalence relation
Congruence holds for a triangle with itself, reverses direction, and chains across three triangles.
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