Similarity and Transformation Lesson
When identifying similarity it is when two figures are similar if the second can be obtained from the first by a sequence of the transformations and dilations. Transformations is an operation that maps a geometric figure, preimage, onto a new figure, image. Dilation a transformation that enlarges or reduces the figure by a scale factor. The figure could also be reflected or rotated. Reflection means to flip the image over the x-axis or the the y-axis. On the other hand rotation means the figure is turned to a fixed point like 90 degrees, 180 degrees, or 270 degrees.
These are some examples of the transformations in the top left hand corner is rotation and the right top hand corner is reflection. Then in the bottom left corner is dilation and in the right hand corner is translation.
This video can help you understand what the 4 transformations are and what you do to get them. It helps you get an image of what the outcome might look like. In the video it says enlargements which is really dilation.