Dilations, Translations, and Similar Figures Review

Mrs. Johns is preforming a transformation on a square. Which transformation results in a similar square, but not congruent to the original square?

• Rotation

• Reflection

• Translation

• Dilation

Which of the proportions could be used to solve for x?

Which triangle must be similar to triangle ABC?

What is the scale factor of the following?

Triangle ABC is dilated by triangle XYZ. What is the perimeter of ABC?

• 33.2

• 36

• 30

• 33

Mrs. Johns was able to map circle P onto circle R (with Q and s being on each circle, respectively) using a translation and a dilation. Mrs. Johns concluded: "I was able to map circle P onto circle R using a sequence of transformations and a dilation, so the figures are similar." What error did Mrs. Johns make in her conclusion?

• Mrs. Johns used translations so the circles aren't similar.

• Mrs. Johns used dilations so the circles aren't similar.

• There is no error. This is a correct conclusion.

A __________________ is a transformation that enlarges or reduces the size from pre-image to image based on a scale factor.

• translation

• reflection

• rotation

• dilation

Similar figures are figures that are the SAME shape, but a DIFFERENT size.

Which one of the following transformations will produce a similar figure?

• translation

• dilation

• rotation

• reflection

In this dilation, the blue figure is the image and the black figure is the pre-image. This means that an ______________ occurred.

• enlargement

• reduction

• spin

• flip

When trying to find the side lengths of the image or the coordinates of the image in a dilation, what operation do you perform using the scale factor? For example: A (2,1) and the scale factor is 3, A' will be (6,3).

• add

• subtract

• multiply

• divide