The two scale factors are reciprocals of one another.
A scale factor of 2.
Each linear dimension is altered by a multiple which is the scale factor.
The scale factor
it is called a outter figure shape
You need information about a pre-image AND and image to work out a scale factor.
The scale factor is the ratio of any side of the image and the corresponding side of the original figure.
The scale factor is the number that the side lengths of one figure can be multiplied by to give the corresponding side lengths of the other figure.
all you have to do is have to figure out from which of the shapes your starting with. So if you decide to start with a scale factor from the larger figure to the smaller figure all u do is the opposite. You do the small divided my the large. So if u want it from the small shape to the large shape scale factor you do the large divided by the small.
A scale factor of one means that there is no change in size.
Scaling will proportionally reduce or enlarge a figure. The amount of scaling is given by the scale factor (greater than zero) If the scale factor is less than 1, the figure is reduced and it is sometimes called a contraction If the scale factor is greater than 1, the figure is enlarged, and it is called a dilation or enlargement. If a centre of enlargement is used, the distance of every point from the centre is multiplied by the scale factor. The scale factor can be negative in which case the distance to the new point is measured on the opposite side of the centre to the original point.
An enlargement with a scale factor of 0.
It can be.
Perimeter will scale by the same factor. Area of the new figure, however is the original figures area multiplied by the scale factor squared. .
Take the 'reciprocal' of the given scale factor to go the other way. The 'reciprocal' of a number is 1/(the number). 3 ==> 1/3 5 ==> 1/5 1/7 ==> 7 2/3 ==> 3/2 etc.
Length of image = Length of original*Scale factor = 10*8 = 80 yards.