Texas Essential Knowledge and Skills (TEKS)
TX.111.28. Grade 8, Adopted 2012.
8.3. Proportionality. The student applies mathematical process standards to use proportional relationships to describe dilations. The student is expected to:
8.3 (A) Generalize that the ratio of corresponding sides of similar shapes are proportional, including a shape and its dilation.
8.3 (B) Compare and contrast the attributes of a shape and its dilation(s) on a coordinate plane.
8.3 (C) Use an algebraic representation to explain the effect of a given positive rational scale factor applied to two-dimensional figures on a coordinate plane with the origin as the center of dilation.
8.10. Two-dimensional shapes. The student applies mathematical process standards to develop transformational geometry concepts. The student is expected to:
8.10 (D) Model the effect on linear and area measurements of dilated two-dimensional shapes.