# CG 7 Dilations

- Author:
- Ms. Andres

- Topic:
- Dilation

## Dilating a Triangle

ABC has been dilated using the ordered pair rule (x, y) (x, y).
Use GeoGebra tools to answer the questions below.

## Observations

1. Compare the lengths of corresponding sides. What do you notice? 2. Compare the measures of corresponding angles. What do you notice?

## Try the dilation tool, using point X as your center of dilation. Experiment with scale factors between 0 and 1 as well as greater than 1. See what effect moving point X has on the image.

What effect did using a scale factor between 0 and 1 have on the image?

What effect did using a scale factor greater than 1 have on the image?

Move point X to the origin. What ordered pair rule maps the pre-image onto the image?
Use *k* to represent your chosen scale factor.