Ratios/Proportions

Corresponding sides in similar figures are proportional

• True

• False

What is the zoom factor or scale factor from small to big of these 2 figures?

The triangles are similar. Solve for x.

• 34

• 26
  

• 30

• 16
  

The triangles are similar. Solve for x.

• 9

• 8

• 7

• 10

A ratio is

• comparing a bunch of numbers

• a comparison between 2 quantities

• an estimation of an amount

• a variable

All of the following are proper representations of a ratio EXCEPT

• a/b

• a to b

• a:b

• a over b

To solve for missing info in a proportion statement you must first

• Cross multiply

• Divide everything

• Get rid of variables

• Guess

If a class has 14 redheads, 8 brunettes, and 6 blondes- What is the REDUCED ratio of redheads to brunettes?

• 4:7

• 14:8

• 8:14

• 7:4

If a class has 14 redheads, 8 brunettes, and 6 blondes- What is the REDUCED ratio of redheads to blondes?

• 3:7

• 14:6

• 6:14

• 7:3

A proportion is a

• ratio statement

• an "if-then" statement

• a statement of 2 ratios

• a comparison