Practice problem
Which of the angles are congruent?
∠1\angle{1}∠1 & ∠2\angle{2}∠2
∠1\angle{1}∠1 & ∠3\angle{3}∠3
∠2\angle{2}∠2 & ∠3\angle{3}∠3
None of the above
Type a concept, like “slope” or “photosynthesis”.
