Question

two rigid transformations are used to map △abc to △qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c

Explanation:

Rigid - transformations include translations, rotations, and reflections. After translating vertex B to vertex R, to map the remaining parts of the triangle correctly, we consider the properties of each transformation. A rotation about the point where the first - step translation is centered (i.e., point B) can align the other vertices and sides of the triangle. A reflection across a line containing a side of the original triangle would not necessarily map the triangle correctly in all cases. Rotating about point B can re - orient the triangle to match the position of △QRS.

Answer:

a rotation about point B