- What is a scale factor of a triangle?
- How do you enlarge a shape with a scale factor of 2?
- How do you enlarge by a negative scale factor?
- What is a scale factor of 1 2?
- What is the enlargement factor?
- What is it called when you make a shape smaller?
- What is a scale factor example?
- How do you enlarge a scale factor?
- What is the formula for scale factor?
- How do you calculate enlargement?

## What is a scale factor of a triangle?

When two triangles are similar, the reduced ratio of any two corresponding sides is called the scale factor of the similar triangles.

…

The ratios of corresponding sides are 6/3, 8/4, 10/5.

These all reduce to 2/1.

It is then said that the scale factor of these two similar triangles is 2 : 1..

## How do you enlarge a shape with a scale factor of 2?

Locate the Centre of Enlargement, then draw Ray Lines from the centre of enlargement through the vertices of the shape. If a shape is being enlarged by a scale factor of 2, the distance from the centre of enlargement to each vertex will be twice the size. The size of the shape will also be twice the size.

## How do you enlarge by a negative scale factor?

An enlargement using a negative scale factor will cause the enlargement to appear on the other side of the centre of enlargement; and will be inverted (upside down). The shape will also change size depending on the value of the enlargement.

## What is a scale factor of 1 2?

One has a side length of 2 inches and another has a side length of 4 inches. This gives a scale factor of 1 : 2 from the small square to the large square. … Remember, this means that 1 inch on the smaller square is 2 inches on the larger square. If we multiply by the scale factor, 1/2, we will get a smaller number.

## What is the 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 it called when you make a shape smaller?

When you resize a shape it gets bigger or smaller.

## What is a scale factor example?

A scale factor is a number which multiplies (“scales”) a quantity. For example,the “C” in y = Cx is the scale factor for x. If the equation were y = 5x, then the factor would be 5.

## How do you enlarge a scale factor?

Enlarge the triangle PQR by a scale factor of 3 about the centre of enlargement O.First draw ray lines from O to each corner of the triangle and extend them.Next measure the distance from O to each corner of PQR. Multiply this distance by 3 and plot the points P’ Q’ and R’.Finally join up the points P’ Q’ R’.

## What is the formula for scale factor?

Suppose you have two similar figures , one larger than the other. The scale factor is the ratio of the length of a side of one figure to the length of the corresponding side of the other figure. Here, XYUV=123=4 . So, the scale factor is 4 .

## How do you calculate enlargement?

To find the centres of enlargement, draw lines through the corresponding corners of each shape. These lines will cross at the centre of enlargement, as shown below. The centres have been marked with the letter O in both diagrams.