Scale factor flashcard.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, a quantity. It is used to enlarge or reduce figures in a proportional way.

Front

If the scale factor is 2, what happens to the size of the shape?

Back

The shape is enlarged to twice its original size.

Front

What does a scale factor of less than 1 indicate?

Back

It indicates a reduction in size.

Front

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

Back

Divide the length of a side of the new shape by the length of the corresponding side of the original shape.

Front

What is the scale factor from shape A to shape B if shape B is twice as large?

Back

The scale factor is 2.

Front

What is the scale factor if shape A is reduced to half its size to create shape B?

Back

The scale factor is 0.5.

Front

If triangle ABC is enlarged to triangle DEF with a scale factor of 1.5, what is the relationship between their sides?

Back

Each side of triangle DEF is 1.5 times the length of the corresponding side of triangle ABC.

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object that is proportional to its actual size, using a specific scale factor.

Front

If a shape is enlarged by a scale factor of 3, what is the new area compared to the original?

Back

The new area is 9 times the original area, because area scales by the square of the scale factor.

Front

What is the scale factor if a shape is reduced from 10 cm to 5 cm?

Back

The scale factor is 0.5.