TEKS: Chapter 111. Mathematics See All Teacher Resources

111.41.c.3

(3) Coordinate and transformational geometry. The student uses the process skills to generate and describe rigid transformations (translation, reflection, and rotation) and non-rigid transformations (dilations that preserve similarity and reductions and enlargements that do not preserve similarity). The student is expected to:

• (A) describe and perform transformations of figures in a plane using coordinate notation;

• (B) determine the image or pre-image of a given two-dimensional figure under a composition of rigid transformations, a composition of non-rigid transformations, and a composition of both, including dilations where the center can be any point in the plane;

• (C) identify the sequence of transformations that will carry a given pre-image onto an image on and off the coordinate plane; and

• (D) identify and distinguish between reflectional and rotational symmetry in a plane figure.