Triangle ABC is transformed to form triangle A′B′C′. A is at (3, 1), B is at (1, 8), and C is at (7, 2). Which transformation happened to​ ​△ABC​ ​to form​ ​△A′B′C′​​? Drag and drop the the correct answers into the each box to complete the sentence. ​ ​△ABC​ ​ is Response area Response area to form ​ ​△A′B′C′​ ​ . A graph with a triangle on it formed between points A begin ordered pair negative 3 comma negative 1 end ordered pair, B begin ordered pair negaive 1 comma negative 8 end ordered pair, and C begin ordered pair negative 7 comma negative 2 end ordered pair.