Lesson 1
What are Scaled Copies?
Let’s explore scaled copies.
Problem 1
Here is a figure that looks like the letter A, along with several other figures. Which figures are scaled copies of the original A? Explain how you know.
![An original figure of the letter A and 4 other figures on a grid.](https://cms-im.s3.amazonaws.com/T1Gti4Mjdu2bvs99hbq82cvF?response-content-disposition=inline%3B%20filename%3D%227-7.1.A.PP.Image.03.png%22%3B%20filename%2A%3DUTF-8%27%277-7.1.A.PP.Image.03.png&response-content-type=image%2Fpng&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAXQCCIHWF3XOEFOW4%2F20240727%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240727T035800Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=02ab9eba1e58e8bd44a00fad96d6e74688f621557e3f7f5056693eb1e46c702f)
Problem 2
Tyler says that Figure B is a scaled copy of Figure A because all of the peaks are half as tall.
Do you agree with Tyler? Explain your reasoning.
![Two 12 sided figures in the shape of a W are labeled A and B.](https://cms-im.s3.amazonaws.com/nKBHoLkqRYK6QM9JFwQqmEyt?response-content-disposition=inline%3B%20filename%3D%227-7.1.PP.New.Image.01.png%22%3B%20filename%2A%3DUTF-8%27%277-7.1.PP.New.Image.01.png&response-content-type=image%2Fpng&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAXQCCIHWF3XOEFOW4%2F20240727%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240727T035800Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=6fd3b5843291f3eeb37253b72dcc287817c0674a59529172b3fbad705f00b1fa)
Problem 3
Here is a picture of the Rose Bowl Stadium in Pasadena, CA.
![A satellite image looking down on a stadium in the shape of an oval. The stadium is slightly wider than it is tall.](https://cms-im.s3.amazonaws.com/yXjKXmQsxLyZ5HiSKxnEqyey?response-content-disposition=inline%3B%20filename%3D%227-7.1.B.PP.Image.01.png%22%3B%20filename%2A%3DUTF-8%27%277-7.1.B.PP.Image.01.png&response-content-type=image%2Fpng&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAXQCCIHWF3XOEFOW4%2F20240727%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240727T035800Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=bf6be19d9cdf5b05182299779f3e04fc689f7fa5c47032b92ebcbe0e54a6e080)
Here are some copies of the picture. Select all the pictures that are scaled copies of the original picture.
![4 images of the original picture of the Rose Bowl. These images each have different dimensions.](https://cms-im.s3.amazonaws.com/ALDL2XRgUdCrtmX2aaSZzDeP?response-content-disposition=inline%3B%20filename%3D%227-7.1.B.PP.Image.02.1.png%22%3B%20filename%2A%3DUTF-8%27%277-7.1.B.PP.Image.02.1.png&response-content-type=image%2Fpng&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAXQCCIHWF3XOEFOW4%2F20240727%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240727T035800Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=266466c01047b7936adb44ea5bc88f9b79f8aba28b13d7d053e04e9371bdce45)
Problem 4
Complete each equation with a number that makes it true.
- \(5 \boldcdot \text{______} = 15\)
- \(4 \boldcdot \text{______} = 32\)
- \(6 \boldcdot \text{______} = 9\)
- \(12 \boldcdot \text{______} = 3\)