# Making Scaled Copies

Warmup

Activity #1

Draw Scaled Copies of a Figure.

• Draw a scaled copy of Figure A and Figure B using a scale factor of 3.​

• Draw a scaled copy of Figure C and Figure D using a scale factor of .​

Activity #2

Draw More Scaled Copies of a Figure.

Diego and Jada want to scale the polygon below so the side that corresponds to 15 units in the original is 5 units in the scaled copy. They each use a different operation to find the new side lengths. Their finished drawings are found below.

(2.) Choose the correct answers below.

Andre wants to make a scaled copy of Jada’s drawing so the side that corresponds to 4 units in Jada’s polygon is 8 units in his scaled copy. Andre says “I wonder if I should add 4 units to the lengths of all of the segments?”

(4.) What would you say in response to Andre? Explain or show your reasoning.

• Create the scaled copy that Andre wants on the applet below.

The side lengths of Triangle B are all 5 more than the side lengths of Triangle A. Can Triangle B be a scaled copy of Triangle A? Explain your reasoning.

Activity #3

Draw More Scaled Copies of a Figure.

• If it is helpful, use the coordinate grid below to draw the two figures described.​

(1.) Quadrilateral A has side lengths 6, 9, 9, and 12. Quadrilateral B is a scaled copy of Quadrilateral A, with its shortest side of length 2.

• Draw a scaled copy of Polygon A below using a scale factor of 2.

• Draw a scaled copy of Polygon B below using a scale factor of 1/2.

• Draw a scaled copy of Polygon C below using a scale factor of 3/2.

Challenge #1

Here below is a polygon on a grid.

(1.) Draw a scaled copy of the polygon in the applet above, that has a perimeter of 30 units.

Challenge #2

Priya and Tyler are discussing the figures shown below. Priya thinks that B, C, and D are scaled copies of A. Tyler says B and D are scaled copies of A.

Challenge #3

Quiz Time