Lesson 3

Making Scaled Copies

Problem 1

Here are 3 polygons.

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

Draw a scaled copy of Polygon B using a scale factor of $$\frac{1}{2}$$.

Draw a scaled copy of Polygon C using a scale factor of $$\frac{3}{2}$$.

Solution

For access, consult one of our IM Certified Partners.

Problem 2

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. What is the perimeter of Quadrilateral B?

Solution

For access, consult one of our IM Certified Partners.

Problem 3

Here is a polygon on a grid.

Draw a scaled copy of this polygon that has a perimeter of 30 units. What is the scale factor? Explain how you know.

Solution

For access, consult one of our IM Certified Partners.

Problem 4

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. Do you agree with Priya, or do you agree with Tyler? Explain your reasoning.

Solution

For access, consult one of our IM Certified Partners.

(From Unit 1, Lesson 1.)