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Scale Drawings
Scale Factor and Missing Side
Triangle Inequality
Misc. Review
100

Two cities are 3 inches apart on a map. The map has a scale of 1 inch = 150 miles. In real life, how far apart are the two cities?

450 miles

100

The scale factor from triangle DEF to triangle D`E`F`is ...



1.5 cm

100

Can the sides of a triangle have lengths 2, 7, and 7?

Prove why?

Yes, 

2 + 7 > 7


200

What is the distance from Austin, TX to Houston, TX if it is 3 inches on the map?

1 inch : 55 miles

165 miles

200

 Find x

x = 7

200

Can the sides of a triangle have lengths 8, 1, and 5?

Prove why?

No, 

1 + 5 is not > 8

200

The scale of a map says that 8 cm represents 5 km.

  1. What distance on the map (in centimeters) represents an actual distance of 8 kilometers?

  1. What is the actual number of kilometers that is represented by 5 centimeters on the map? 

1) What is 12.8 cm?


2) What is 3.125km?

300

On a scale drawing, 1 inch : 8 feet.  What is the actual length of a room that measures 4 inches?

32 feet

300

The scale factor from triangle NPW to triangle N`P`W`is ...

1/4

300

Can the sides of a triangle have lengths 11, 13, and 2?

Prove why?

No.

2 + 11  is not > 13

400

What is the distance between Paris, France and Montreal, Canada if it is 16 inches on a map?  Use the scale 2 inch : 750 kilometers.

6,000 km

400

What is the scale factor from the original to the copy?

1/5

400

Fill in the blanks:

Triangle inequality states: The ____ of the two _______________ sides of a triangle must be ________ than the ________ side.

Triangle inequality states: The SUM of the two SHORTEST sides of a triangle must be GREATER than the THIRD/LAST side.

400

What is A, B and E?

500

On a scale drawing, 1 centimeter : 4 meters.  What length on the drawing would be used to represent 12 m?

3 cm

500

The value of the unknown side is 


2.5

500

Select all possible side lengths for the third side for the following pair of triangle side lengths. 


7 inches and 4 inches

A. 2 inches

B. 5 inches 

C.10 inches

D. 14 inches

5 inches (B) and 10 inches (C)

4 + 2 > 7  (X)

4 + 5 > 7  (Correct)

4 + 7 > 10 (Correct)

4 + 7 > 14 (X)

500


What are B, C and D?