Unit 3 Review

Unit 3 Review

By Edward Staten

Multiple Choice

What is the SCALE FACTOR that will take ABCD to EFGH? (Hint: getting smaller

• $$\frac{5}{2}$$  

• $$\frac{2}{5}$$  

• $$5$$  

• $$2$$  

SCALE FACTOR​​

• If figure is getting BIGGER, scale factor is greater than 1.

• If figure is getting SMALLER, scale factor is less than 1.​

Multiple Choice

What is the scale factor that will take WXYZ to ABCD?

• $$\frac{3}{2}$$  

• $$9$$  

• $$\frac{2}{3}$$  

• $$6$$  

Fill in the Blank

What is the length of BB'?

​AA' = 3, which is half of 6 so...

Half of 7 is 3.5.​

Open Ended

​Simply put,

2 is half of 4, but 5 is not half of 9. That is why the lines are not parallel.​

Multiple Select

• $$\frac{A'B'}{AB}=\frac{A'C'}{AC}$$  

• $$\frac{AD}{A'D'}=\frac{BC}{B'C'}$$  

• $$\frac{BD}{B'D'}=\frac{C'D'}{CD}$$  

• $$\frac{AB}{CD}=\frac{A'B'}{C'D'}$$  

• $$\frac{BC}{A'D'}=\frac{B'C'}{AD}$$