Joey and Emily's teacher gave them each a triangle divided into three parts-A, B, and C- figure that will prove that the sum of the interior angles of a triangle is always equal to 18 Joey's and Emily's figures are shown below. Joey's Figure Emily's Figure

This activity will you meet these educational goals: mathematical practices-you will make sense of problems and solve them, reason abstractly and quantitatively, and usemathematics to model real-world situations. directionsread the instructions for this self-checked activity type in your response to each question, and check your answers. at theend of the activity, write a brief evaluation of your work.