## ◂Math Worksheets and Study Guides Eighth Grade. Similarity and scale

### The resources above correspond to the standards listed below:

#### Texas Essential Knowledge and Skills (TEKS)

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.