Polygons

Are the following similar? Why or why not?

• Yes

• No, the corresponding angles are not equal.

• No, the ratios of the corresponding sides are not equal.

Find the scale factor.

• 4:1

• 1:3

• 2:1

• 7:3

In similar Polygons, corresponding sides are ___ and corresponding angles are ___. (Fill in the blanks)

• congruent, proportional 

• proportional, congruent 

• congruent, congruent

• proportional, proportional

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

Sides in similar figures must be proportional.  

• True

• False 

When figures are similar, their corresponding angles are__________________.

• congruent

• proportional

• yellow

• obtuse

Find the scale factor of ΔMNP to ΔDEF

Pentagon JKLMN is similar to pentagon VWXYZ.
What is the measurement of angle X?

• 30 degrees

• 60 degrees

• 150 degrees

• 120 degrees

Solve for x. 

• 8

• 6

• 10

• 12

Two polygons are similar. The perimeter of the first polygon is 72 inches. The perimeter of the second polygon is 90 inches. What is the scale factor of the first polygon to the second polygon?

• 72 : 90

• 90 : 72

• 4 : 5

• 5 : 4