Scale Drawings

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or area that is proportionally smaller or larger than the actual size, using a specific ratio or scale.

Front

What does scale factor mean?

Back

The scale factor is the ratio of a length in a scale drawing to the corresponding length in the actual object. It indicates how much the drawing has been enlarged or reduced.

Front

How do you set up a proportion for scale drawings?

Back

Front

What is the formula to find the length of a model using the scale factor?

Back

The formula is: Model Length = Actual Length × (Model Scale / Actual Scale).

Front

If a model is 3 inches tall and the actual object is 12 feet tall, what is the scale factor?

Back

Front

How do you convert feet to inches?

Back

To convert feet to inches, multiply the number of feet by 12, since there are 12 inches in a foot.

Front

What is the purpose of using scale drawings?

Back

Scale drawings are used to create accurate representations of objects or areas that are too large or too small to be drawn at actual size.

Front

What units are commonly used in scale drawings?

Back

Common units include centimeters, inches, feet, and meters, depending on the context of the drawing.

Front

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

Back

To find the actual size, set up a proportion using the scale factor and solve for the unknown length.

Front

What is the relationship between scale factor and area?

Back

The area of a shape in a scale drawing is proportional to the square of the scale factor. If the scale factor is k, the area scales by k².