# Chapter 2 Lesson 3

## Independent Practice

**In question 1 and 2 you would have to measure one side of both triangles/parallelogram and put the two measures into a fraction ratio and simplify it then repeat this process for the other sides.**

**In question 3 you multiply 3 and 5 by 1.5 for the scrapbook then multiply the both of the answers by 1.5 again for the cover then determine if they are similar.**

**In question 4 and 5 determine the transformations(dilation, translation, rotation, and reflection) you have to use in order to map the preimage on to the image.**

In question 9 you have tell whether True or False the order in which you perform the transformations does not matter. Then explain your reason.

**In question 10 you have to bubble "A", "B", "C", or "D" to determine which series of transformations maps point C onto point R. **

__Definitions__

Transformation- a thorough or dramatic change in form or appearance.

Dilation- The act of expanding or shrinking a figure by a scale factor.

Scale Factor- a number used as a multiplier in scaling.

Translation- the process of moving something from one place to another.

Reflection- The act of reflecting over the X-axis or Y-axis.

Rotation- the action of rotating around an axis or center.

Preimage- The main image before any transformations take place.

Similar Figures- Two geometrical objects are called similar if they both have the same shape.

Congruent Figures- Figures that have the same size and shape.