Unit Plan
Texas Education Agency

Texas Gateway: Generalizing Proportions From Similar Figures

For Students 7th - 8th Standards
Given a pair of similar figures, including dilations, students will be able to generalize that the lengths of corresponding sides are proportional.
Handout
CK-12 Foundation

Ck 12: Geometry: Ratios and Proportions Study Guide

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This study guide reviews ratios, proportions, and cross-multiplication.