Enlarging a shape changes its size. A transformation is a way of changing the size or position of a shape. To enlarge a shape, a centre of enlargement is required. When a shape is enlarged from a centre of enlargement, the distances from the centre to **each point are multiplied by the scale factor**.

Contents

- 1 What is enlargement and reduction in geometry?
- 2 How do you describe an enlargement?
- 3 What is an enlargement factor?
- 4 What is enlargement and reduction?
- 5 Is the enlargement or reduction of a figure?
- 6 What type of word is enlarged?
- 7 Where is the centre of enlargement?
- 8 What are the properties of enlargement?
- 9 What is enlargement and reduction of design?

## What is enlargement and reduction in geometry?

A reduction (think shrinking) is a dilation that creates a smaller image, and an enlargement (think stretch) is a dilation that creates a larger image. If the scale factor is between 0 and 1 the image is a reduction. Dilation Reduction. If the scale factor is greater than 1, the image is an enlargement.

## How do you describe an enlargement?

When describing enlargements you must state by how much the shape has been enlarged. For example, a scale factor of means that the side-lengths of the new shape are twice the side-lengths of the original. A scale factor of means that the side-lengths of the new shape are three times the side-lengths of the original.

## What is an enlargement factor?

The size of an enlargement/reduction is described by its scale factor. For example, a scale factor of 2 means that the new shape is twice the size of the original. A scale factor of 3 means that the new shape is three times the size of the original.

## What is enlargement and reduction?

Key Ideas. • An enlargement results in an image that is the same. shape but proportionally larger than the original. • A reduction results in an image that is the same shape. but proportionally smaller than the original.

## Is the enlargement or reduction of a figure?

A dilation is a proportional enlargement or reduction of a figure through a point called the center of dilation. The size of the enlargement or reduction is called the scale factor of the dilation. 1. This is called an enlargement.

## What type of word is enlarged?

What type of word is ‘enlarged’? Enlarged is a verb – Word Type.

## Where is the centre of enlargement?

The centre of enlargement may be outside an object, or it may be inside a shape, on an edge or at a corner. The image may overlap the shape or one may be inside the other. Enlarge the triangle PQR by a scale factor of 3 about the centre of enlargement O.

## What are the properties of enlargement?

Properties of Enlargement

- The scale factor =
- The centre of enlargement is the only point that does not move (invariant)
- The shape of the object does not change when enlarged.
- The sizes of the angles in the object and image do not change (invariant)

## What is enlargement and reduction of design?

The idea behind enlarging and reducing a design is to be able to use one motif on different sizes and shapes of articles.