1 / 6

9-5 Dilations

9-5 Dilations. Dilation. A dilation is a copy of a figure that is larger or smaller than the original figure. The original figure and all dilations of it are similar. A dilation is an enlargement if the scale factor is greater than 1. The dilation will be LARGER than the original figure.

nydia
Download Presentation

9-5 Dilations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 9-5 Dilations

  2. Dilation • A dilation is a copy of a figure that is larger or smaller than the original figure. • The original figure and all dilations of it are similar. • A dilation is an enlargement if the scale factor is greater than 1. • The dilation will be LARGER than the original figure. • The dilation is a reduction if the scale factor is between 0 and 1. • The dilation will be SMALLER than the original figure.

  3. Finding a Scale Factor • ΔX’T’R’ is a dilation of ΔXTR. • Is the dilation an enlargement or a reduction? • What is the scale factor of the dilation?

  4. Finding the Coordinates of a Dilation • In this book, all dilations of a figure drawn in the coordinated plane has the origin as the center of dilation. • Therefore, you can find the coordinates of a dilation by multiplying the coordinates of the original figure by the scale factor. • You can also find the scale factor by dividing the coordinates of the dilation by the coordinates of the original figure.

  5. Finding a Dilation • What are the coordinates of each vertex of the dilation of ΔPZG if the center is (0, 0) and the scale factor is 2?

  6.  J’K’L’M’ is a dilation of JKLM with a center at (0, 0). Is the dilation an enlargement or reduction? What is the scale factor of the dilation?

More Related