Representing objects

What is a scale drawing?

• A drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount

• The inside measurement of a shape

• A ratio that shows the relationship between two measurements. 

What scale is used to go from rectangle 1 to rectangle 2?

• 2:1

• 2:2

• 1:1

• 1:2

The scale for the image is 1:4.

What is the actual length?

• 25 cm

• 200 cm

• 40 cm

• 20 cm

Triangle 1 is enlarged by the scale 3:1.

What is the length of x?

• 3

• 6

• 2

• 4

f the horse was 2000 mm long, what would the length of the drawing be?

• 20000

• 2

• 20

• 200

What does ‘dimensions’ mean?

• The inside of a shape

• The length, height and width

• A drawing that shows a proportional relationship

• All of the answer are correct

Jimmy made a scale drawing of his house.

The actual dimensions of his house are 15m by 30m. He used the scale 1:100.

What are the dimensions of the scale drawing?

• 0,15 m by 0,3 m

• 15 cm by 30 cm

• 1,5 m by 3 m

• 15 mm by 30 mm

A garage floor measures 45 m by 30 m. A scale drawing of the floor on paper uses a scale of 1:15.

What are dimensions of scale drawing?

• 3 m by 1 m

• 3 m by 30 m

• 1 m by 15 m

• 3 m by 2 m

A map has a scale 1 cm --> 5 km.

On the map, 2 cities are 3 cm apart.

What is the actual distance between the 2 cities?

• 15 m

• 15 km

• 1,5 km

• 1500 m

What is technical drawing?

• A quick, freehand sketch

• Plans that communicate how something is constructed

• Drawing things for technology

• Plans that only architects and engineers make