How do you draw a scale factor of 3?

1. First draw ray lines from O to each corner of the triangle and extend them.
2. Next measure the distance from O to each corner of PQR. Multiply this distance by 3 and plot the points P’ Q’ and R’.
3. Finally join up the points P’ Q’ R’.

What is enlarge by scale factor 3?

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 does centre mean in enlargement?

Centre of enlargement is a point which tells you where to draw an enlargement. An enlargement is a type of transformation where we change the size of the original shape to make it bigger or smaller by multiplying it by a scale factor.

What is a scale factor of 1 3?

A scale factor of 1:3 means that one triangle is 3 times bigger than the other, for example. So, if the small triangle has a perimeter of 27, the big triangle has a perimeter 3 times as big. Doing the math, 3⋅27=81 – the big triangle’s perimeter, then, is 81 units.

Can you have a scale factor of 0?

If the scale factor is between 0 and 1 the image is a reduction. If the scale factor is greater than 1, the image is an enlargement.

What is center of dilation?

Center of Dilation: The center of dilation is a reference point used to appropriately scale the dilation of a figure.

How do you work out centre of enlargement?

To find the centre of enlargement, draw ray lines from the corners of the image through the corners of the original shape.

How do you find the center of enlargement with a scale factor?

Centre of enlargement

1. To enlarge the triangle with a scale factor of and centre of enlargement O, take the following steps:
2. For a scale factor of :
3. OA’ = × OA.
4. OB’ = × OB.
5. OC’ = × OC.
6. For a scale factor of :
7. OA’ = × OA.
8. OB’ = × OB.