Scale Copy and Scale factors

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 a figure.

Front

If a shape is enlarged by a scale factor of 2, what happens to its dimensions?

Back

Each dimension of the shape is multiplied by 2, making the shape twice as large.

Front

What does it mean to create a scaled copy of a shape?

Back

A scaled copy of a shape is a new shape that is similar to the original but is either larger or smaller based on a scale factor.

Front

How do you find the new length of a side when scaling a shape?

Back

Multiply the original length by the scale factor.

Front

If a triangle has sides of 3 cm, 4 cm, and 5 cm, what are the sides if the triangle is scaled by a factor of 3?

Back

The new sides will be 9 cm, 12 cm, and 15 cm.

Front

What is the relationship between the original shape and its scaled copy?

Back

The original shape and its scaled copy are similar, meaning they have the same shape but different sizes.

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what are the dimensions after reducing by a scale factor of 5?

Back

The new dimensions will be 2 cm (length) and 1 cm (width).

Front

What is the scale factor if a shape is reduced from 20 cm to 5 cm?

Back

The scale factor is 1/4.

Front

How do you determine which side corresponds to another side in a scaled copy?

Back

Corresponding sides in a scaled copy are in the same ratio as the scale factor.

Front

If a shape has a scale factor of 1/2, what happens to its area?

Back

The area is reduced by a factor of (1/2)² = 1/4.