Transformations: Congruent or Similar Images

The video tutorial discusses the four types of transformations: translation, reflection, rotation, and dilation. It presents a problem involving rectangle MNPQ and asks which transformation results in a similar but not congruent image. The tutorial explains that translations, reflections, and rotations result in congruent images, while dilations can result in similar images if the scale factor is not 1. The correct answer involves a reflection followed by a dilation with a scale factor of two, resulting in a similar image. The video emphasizes understanding the properties of transformations to solve such problems.

What is the significance of a scale factor of 1 in dilations?

Which transformation results in an image that is similar but not congruent, and why?