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Help Me On My Geometry Class 3

Which of the triangles in the diagram are congruent? 

  • triangle 1, triangle 2, and triangle 3

  • triangle 1, triangle 3, and triangle 4

  • triangle 3, triangle 4, and triangle 5

  • triangle 3 and triangle 5

  • triangle 2 and triangle 5

× How can I help?