# SAS Similarity Investigation

- Topic:
- Polygons, Ratios, Similar Triangles, Triangles

This is an applet that will help you investigate why SAS Similarity is valid.

**Given construction: ∠B≅∠D and the sides that include this angle are proportional.**Explore: Move points A, B, or C. How does this affect the remaining angles and ratio of the 3rd side? Using the given construction, are these two triangles similar? Explore: Change the scale factor. How does this affect the remaining angles and ratio of the 3rd side? Using the given construction, are these two triangles similar?