Finding Scale Factor

Front

What is the scale factor from a smaller shape to a larger shape?

Back

The scale factor is a number that describes how much larger or smaller a shape is compared to another shape.

Front

If the scale factor is greater than 1, the copy is...

Back

larger.

Front

If the scale factor is less than 1, the copy is...

Back

smaller.

Front

What does a scale factor of 1 mean?

Back

The two shapes are the same size.

Front

What is the scale factor of a shape that is reduced to half its size?

Back

1/2 (Reduction).

Front

What is the scale factor of a shape that is enlarged to twice its size?

Back

2 (Enlargement).

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 corresponding side of the smaller shape.

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what is the scale factor if the new rectangle has a length of 20 cm?

Back

2.

Front

What is a scale drawing?

Back

A representation of an object that is proportional to the actual object, using a scale factor.

Front

If two triangles are similar, what can be said about their corresponding angles?

Back

Their corresponding angles are equal.