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Practice problem

SAS (Side-Angle-Side) Congruence

By Liza Sulkin

Triangle ABC has AB‾=9,BC‾=40,\overline{AB}=9, \overline{BC}=40, and ∠A=77∘\angle A=77^{\circ}.

Triangle DEF has EF‾=9,DE‾=40,\overline{EF}=9, \overline{DE}=40, and ∠D=77∘\angle D=77^{\circ}.

Are these triangles congruent by SAS? Why or why not?

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