8.1 Scale Drawings

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or scene that is proportionally reduced or enlarged in size, maintaining the same shape and proportions as the original.

Front

What does a scale factor greater than 1 indicate?

Back

A scale factor greater than 1 indicates that the figure is enlarged or made bigger.

Front

If a scale is 1 cm:4 ft, what does this mean?

Back

This means that 1 centimeter on the drawing represents 4 feet in actual size.

Front

How do you calculate the actual size from a scale drawing?

Back

To calculate the actual size, multiply the measurement on the scale drawing by the scale factor.

Front

What is the scale factor if a picture measures 3 cm and the actual length is 12 ft?

Back

The scale factor is 4, since 12 ft is 4 times 3 cm.

Front

If a rectangle in a scale drawing has a length of 5 cm and the scale is 1 cm:2 ft, what is the actual length?

Back

The actual length is 10 feet.

Front

What is the relationship between scale factor and size change?

Back

The scale factor determines how much larger or smaller a figure becomes when creating a scale drawing.

Front

If a scale drawing of a car is 3 cm long and the actual car is 12 ft long, what is the scale factor?

Back

The scale factor is 4.

Front

What is the scale factor from a small fry to a large fry if the small fry is 1/3 the size of the large fry?

Back

The scale factor is 3.

Front

How do you find the scale factor between two similar figures?

Back

Divide the length of a side of the larger figure by the corresponding side of the smaller figure.