Dilation Pre-Teaching Practice

[color=#980000][size=150][size=200]Graph the Dilation[/size][/size][br][br][size=150]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. [br][br]DO NOT MOVE THE RED PRE-IMAGE. 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.[br][br]All dilations will be centered at the origin at (0,0)[/size][/color]

Example1: Graph a dilation of the given figure from the origin with a scale factor of 0.5 or 1/2

Example 2: Graph a dilation of the given figure from the origin with a scale factor of 3.

Example 3: Graph a dilation of the given figure from the origin with a scale factor of 1.5 or 3/2

Example 4: Dilate the given figure from the origin with a scale factor of 2.5 or 5/2

[color=#980000][size=200]Find the Scale Factor[/size][br][br][size=150]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.[br][br]DO NOT MOVE ANY POINTS ON THE GRAPHS BELOW. If you accidentally move something, you can reset the graph using the circular arrows in the top right corner of the graph.[br][br]All dilations are centered at the origin at (0,0)[/size][/color]

Example 5

[size=150]What is the scale factor to go from the red triangle ABC to the blue triangle A'B'C' for the graph in Example 5 if the center of dilation is at the origin?[/size]

Example 6

[size=150]What is the scale factor to go from the red triangle ABC to the blue triangle A'B'C' for the graph in Example 6 if the center of dilation is at the origin?[/size]