Scale and Scale Factor

Front

What is a scale drawing?

Back

A drawing that shows a real object enlarged or reduced.

Front

What is the scale factor from ΔDEF to ΔABC if the sides of ΔABC are twice as long as those of ΔDEF?

Back

2

Front

If Megan's scale drawing uses a scale of 1 inch = 2 feet, how long is a backyard that is 78 feet long in real life?

Back

39 inches

Front

If the scale factor is greater than one, what does that indicate about the new figure?

Back

It will be an enlargement.

Front

What is the scale factor from MNOP to ABCD if the sides of ABCD are 1.5 times longer than those of MNOP?

Back

3/2

Front

What does a scale factor of 1/2 indicate about the size of a figure?

Back

The figure is a reduction.

Front

How do you calculate the length in a scale drawing if the real-life length is known?

Back

Divide the real-life length by the scale factor.

Front

What is the purpose of using a scale in drawings?

Back

To represent real objects in a proportional size.

Front

If a drawing has a scale of 1:100, what does this mean?

Back

1 unit on the drawing represents 100 units in real life.

Front

What is the scale factor if a model is 1/4 the size of the actual object?

Back

1/4