7.3 Similar Polygons

Calculate the side length, in units, in this proportion. $\frac{PQ}{8}=\frac{5}{160}$  

• 0.08

• 1.43

• 4

• 0.25

Calculate the value of x in this proportion: $\frac{x}{4.5}=\frac{13.5}{18}$  

• 3.375

• 0.6

• 1

• 0.75

Calculate the value of y in this proportion. $\frac{y}{8.4}=\frac{7.2}{14.4}$  

• 1.1

• 1.2

• 4.2

• 46.08

Identify similar quadrilaterals. (image is a little distorted, all drawings should be exactly on lines)

• P and Q

• P and R

• R and S

• Q and S

Identify similar parallelograms.

• All of the above

• A and B

• A and D

• D and B

Identify similar rectangles. (Side lines are missing on left side, it's supposed to be a rectangle)

• Y and W

• Y and Z

• W and Z

• X and Z

Identify similar pentagons.

• Q, R, and S

• P, R, and S

• Q and S

• P, Q, and S

Identify similar rectangles with these dimensions:

• 10cm by 15cm

• 19cm by 28cm

• 14cm by 21cm

• 16cm by 24cm

Calculate the value of r in this proportion:  $\frac{r}{26}=\frac{52}{208}$  

• 6

• 104

• 416

• 6.5

These two pentagons are similar. Determine the value of x.

• 8cm

• 1.9cm

• 5.12cm

• 18cm