Ratios, Proportions, and Similar Polygons

When figures are similar, their corresponding angles are__________________.

• congruent

• proportional

• yellow

• obtuse

Similarity Ratio: _

• 2/3

• 1/2

• 2

• 3

Are the two figures similar?

• Yes

• No

Are the two figures similar?

• Yes

• No

Are the polygons similar?

• HGFE ~ NMLK

• KNML ~ FGHE

• No - because corresponding angles are not congruent

• No - because corresponding sides are not proportional

Are these two triangles similar? Why or why not?

• Yes, they are both triangles

• Yes, they both have right angles

• No, they only have one congruent angle

• No, they look different

What is the correct value for x?

• x = 3

• x = 5

• x = 7

• x = 9

A triangle’s angle measures are in the extended ratio of 2 : 4 : 9. Find the measures of the angles.

• 20^o, 40^o, 90^o

• 24^o, 48^o, 108^o

• 24^o, 32^o, 124^o

• 20^o, 40^o, 100^o

Solve for k

• 165

• 17

• 1/17

• 1/165

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90