In △ LMN, vertex L is above M and N. In △ RST the corresponding vertex, R, is below T and S. To line up their orientations, we can rotate △ LMN 180^(∘) about the origin.
Therefore, the congruence transformation that maps △ LMN onto △ RST can be written as shown below.
Rotation
180^(∘) about the origin
