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Answer:
Congruent
Step-by-step explanation:
∠1 ≅ ∠2
∠2 ≅ ∠3
∠1 ≅ ∠3
Therefore,
∠1 ≅ ∠2 ≅ ∠3
Type : AAA rule of congruency.
Note : -
" ≅ " means " congruence ".