Two rigid transformations are used to map δabc to δxyz. the first is a translation of vertex a to vertex x. what is the second transformation?

1. Two triangles can be mapped to each other only if they are similar.

2. So we are assuming similarity of the triangles.

3. First we translate vertex A to vertex X
    Second, we rotate AC to XZ (or now AZ) , with an angle measure equal to  that of angle CXZ
    third we dilute the larger to the smaller so that they match.