Scale Factor and Scale Drawings

Front

What is a scale drawing?

Back

A drawing that shows a real object enlarged or reduced.

Front

What is a scale factor?

Back

A number that describes how much a shape is enlarged or reduced.

Front

If a shape is enlarged by a scale factor of 3, what happens to its dimensions?

Back

Each dimension is multiplied by 3.

Front

What does a scale factor of 1/2 indicate?

Back

The shape is reduced to half its original size.

Front

What is the scale factor from a small shape to a big shape if the big shape is twice the size?

Back

2

Front

What is the scale factor of 5?

Back

Enlargement.

Front

If a drawing is made at a scale of 1:100, what does this mean?

Back

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

Front

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

Back

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

Front

What is the effect of a scale factor less than 1?

Back

It reduces the size of the shape.

Front

What is the effect of a scale factor greater than 1?

Back

It enlarges the size of the shape.