# Similarity Investigation

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?

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