Dilation Scale Factor Similar Polygons

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4

The original perimeter of a rectangle is 30cm, if we enlarge it by a scale factor of 4 what is the new perimeter?

• 120

• 480

• 1920

A dilation is which of the following: 

• only an enlargement

• only a reduction

• Either an enlargement or a reduction

• Neither an enlargement or a reduction

The length of ST in Polygon STUV is 12 feet. What would be the length of S'T' if we use a scale factor of ¹/₄?

• 48

• 4

• 3

• 6

Figure A'B'C'D' is a dilation of Figure ABCD. What scale factor was used to create A'B'C'D'?

• 1/3

• 3/5

• 3

• 10

Triangle DEF is a dilation of Triangle ABC. What scale factor is used to create triangle DEF?

Which quadrilaterals ARE similar to PQRS

• I

• II

• III

• IV

A triangle similar to Triangle JMN will be drawn using points J and K. What could be the coordinates of the third point?

• (-5,-15)

• (-5,-7)

• (-1,-11)

• (-1,-3)

Figure 2 is a dilation of figure 1. What scale factor was used to create object 2?

The length of side AB in Triangle ABC is 32 meters. After a dilation of ³/₄ what would be the length of side A'B'?