# Unit 2, Lesson 4: Dilations on a Square Grid

- Author:
- Ms. Espy

## Geogebra Practice

## 4.1: Estimating a Scale Factor

Point C is the dilation of point B with center of dilation A and scale factor s. Estimate s and

__explain your reasoning__on your paper.## 4.2 Dilations on a Grid

#1 Directions

__Dilate__- On your paper,
__explain the relationship__between the pre-image and image. Include these words in your explanation:

## #2 Directions

__Dilate__triangle QRS with center T and scale factor 2.__Dilate__triangle QRS with center T and scale factor 1/2.- On your paper, explain the difference between dilating with a scale factor
*greater than*1 and dilating with a scale factor*less than*1. Use the following words in your explanation:

## 4.3 Dilations on a Coordinate Grid Directions

__On your paper__, guess the quadrant for point E' after a dilation with center Q at (-3, 4) and a scale factor of 2.__Explain why__you guessed that quadrant.__Dilate__trapezoid CDEF with center Q at (-3, 4) and scale factor 2.__Explain on your paper__why your guess was correct or incorrect.__Explain on your paper__the relationship between QE and QE'. (Think: How does distance relate to scale factor for the pre-image and image?)