Does SAS Work?
Sally reasons as follows: "If angle is congruent to angle then I can move point to point so that side lies on top of side and side lies on top of side . Since and are congruent as are and the two triangles match up exactly and so they are congruent.'' Explain Sally's reasoning for why triangle is congruent to triangle using the language of reflections: a. Construct a reflection which maps point A to point D . b. Construct a reflection which does not move D but which sends B' to E. c. Construct a reflection which does not move D or E but which sends C'' to F. Problem from Illustrative Math https://www.illustrativemathematics.org/