7.1 - 7-3 Review

A bookcase is 4 ft tall.  A model of the bookcase is 6 in. tall.  What is the ratio of the height of the model bookcase to the height of the real bookcase?

• 4:6
• 1:8
• 2:3
• 48:6

• 10/b
• b/10
• 9/a

Are the two polygons shown similar?  If so, give the similarity ratio of the first polygon to the second.  If not, explain.

• Yes; 2:3
• Yes; 4:5
• Not similar
• Yes; 4:3

Solve the proportion.

• 2
• 4
• 2.5
• 6

Solve the proportion.

• 7/34
• 5
• 34/7
• 7

On the scale drawing of a floor plan, 2 in. = 5 ft.  A room is 7 in. long on the scale drawing.  Find the actual length of the room.

• 17.5 ft
• 17.5 in
• 17 ft
• 34 ft

m∡C = m∡____

• A
• BDF
• BFD
• B

DF:AC = BF:____

• FC
• BC
• DB
• AD

A postcard is 6 in. by 4 in.  A printing shop will enlarge it so that the longest side is any length up to 3 ft.  Find the dimensions of the biggest enlargement.

• 3 ft by 2 ft
• 3 ft by 4 ft
• 2.5 ft by 3 ft
• 2 ft by 2 ft

Find the value of x.

• 3
• 10/3
• 4
• 3/10