Scale Factor MA.7.4.2By:

What is Scale Factor? Scale factor is the ratio between the lengths of corresponding sides of two similar figures. Scale factor is the ratio between the lengths of corresponding sides of two similar figures.

Example of Scale Factor Scale factor is 2. Scale factor is 2. Double the length and the width. Double the length and the width. Area is 4 times greater. Area is 4 times greater.

Question What is the scale factor? How much larger is the area of new square?

Solution The scale factor is 3. The scale factor is 3. The area is 9 times greater. The area is 9 times greater. 3 3

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