GeoGebra Classroom

# Dilation Practice Accommodated

## Video Instructions and Examples

Graph the Dilation In the following graphs, you will be given a red pre-image and a scale factor. Figure out what the dilated image will look like and the use the Polygon tool to graph the dilation. DO NOT MOVE THE RED PRE-IMAGE OR YOU WILL ONLY GET HALF CREDIT FOR THAT PROBLEM. If you accidentally move the red pre-image, you can reset the graph using the circular arrows in the top right corner of the graph. All dilations will be centered at the origin at (0,0) As part of your accommodations, the origin (shown as a black dot) and the dilated version of Point A (shown in blue) have been graphed for you.

## 10. Graph a dilation of the given figure from the origin with a scale factor of 1.5 or 3/2

Find the Scale Factor In this section, look at the given graph and find the scale factor required to go from the red pre-image to the blue image. The scale factor may be written as a decimal or a fraction. Some scale factors will be whole numbers. DO NOT MOVE ANY POINTS ON THE GRAPHS BELOW OR YOU WILL ONLY GET HALF CREDIT FOR THAT PROBLEM. If you accidentally move something, you can reset the graph using the circular arrows in the top right corner of the graph. All dilations are centered at the origin at (0,0) (shown on the graph as a black dot)

## Graph 11

What is the scale factor to go from the red triangle ABC to the blue triangle A'B'C' for graph 11 if the center of dilation is at the origin? As part of your accommodations, I will give you 2 hints: *This is an example of an enlargement (the scale factor is greater than 1) *The scale factor is a whole number

## Graph 12

What is the scale factor to go from the red triangle ABC to the blue triangle A'B'C' for graph 12 if the center of dilation is at the origin? As part of your accommodations, I will give you 2 hints: *This is an example of a shrink (the scale factor is less than 1) *The scale factor is a fraction or decimal