Stretching+and+Shrinking

[|Parent Letter for Stretching and Shrinking] [|Parent Letter in Spanish]

Similar Figures: Corresponding Sides & Angles, Scale Factor, Scale Factor's Effect on Area

 * [|Algebra Lab: Sample Exercises about Similar Polygons]
 * [|Descartes 2D: Similar Polygons--Interactive Applets]
 * [|Math.com: Online Tutorial on Similar Figures]
 * [|NCTM: Learning about Length, Perimeter, Area, and Volume of Similar Objects Using Interactive Figures: Side Length and Area of Similar Figures]
 * [|NCTM: Understanding Congruence, Similarity, and Symmetry]--Interactive Applets help you explore how different kinds of symmetry give us similar figures.
 * [|Regents Math : Similar Polygons: Ratio of Perimeters & Areas]