What is it called when the scale factor is greater than 1?

What is it called when the scale factor is greater than 1?

If the scale factor is greater than 1, the image is an enlargement. (It expands) • If the scale factor is between 0 and 1, the image is a reduction. (It contracts) • If the scale factor is 1, the figure and the image are the exact same size (congruent).

What happens to a figure if the scale factor is greater than 1?

If the scale factor is greater than 1, the image is an enlargement (a stretch). If the scale factor is between 0 and 1, the image is a reduction (a shrink). If the scale factor is 1, the figure and the image are congruent.

What is the scale factor of the dilation?

The scale factor of a dilation is the ratio of lengths in the image after the dilation to the corresponding lengths in the original figure. It tells you how much the dilation enlarges or reduces the figure.

What does it mean when the scale factor is less than 1?

If the scale factor is less than 1, the dilated figure is smaller than the original, if it is greater than 1 the dilated figure is larger than the original.

What if a scale factor is 1?

If the scale factor is one, it means that corresponding sides are equal in length. In this case the shapes would be congruent (ie identical) rather than similar. They have the same shape, the same angles and the same size.

What happens when the scale factor is less than 1 but greater than zero?

If the scale factor is less than 1 , then the image formed is going to be smaller than the original image. If △ABC is a triangle that has sides 4,2,6 and is reduced to a second triangle, say △A’B’C’ , with a scale factor of 12 , then △A’B’C’ will have dimensions of 2,1,3 , with the corresponding sides of △ABC .

What does a scale factor of less than one mean?

A scale factor of less than one means. that the image will be larger than the pre-image. That the image will be the same as the pre-image. That you need to subtract that amount off of each side.

What does a scale factor of 1 mean?

As an example, think of two squares that are similar. 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.

How do you find scale and scale factor?

The basic formula to find the scale factor of a figure is: Scale factor = Dimensions of the new shape ÷ Dimensions of the original shape. This can also be used to calculate the dimensions of the new figure or the original figure by simply substituting the values in the same formula.

What is the scale factor in the dilation 2?

What does dilated by a scale factor of 2 mean? The picture below shows a dilation with a scale factor of 2. This means that the image, A’, is twice as large as the pre-image A. Like other transformations, prime notation is used to distinguish the image fromthe pre-image.

What is an example of a scale factor less than 1?

Scale factor: Smaller figure dimensions ÷ Larger figure dimensions. The scale factor for scaling down is always less than 1. For example, if the dimension of the smaller figure is 8 and that of the larger one is 24, let us place this in the formula which makes it: 8 ÷ 24 = 1/3.

When is a figure scaled by a scale factor greater than 1?

When a figure is scaled by a scale factor greater than 1, the copy is larger than the original. When the scale factor is less than 1, the copy is smaller. When the scale factor is exactly 1, the copy is the same size as the original. . Triangle .

What is the scale factor for scaling down?

The scale factor for scaling up is a ratio greater than 1 1. The scale factor for scaling down is a ratio of less than 1 1. Once you know which way you are scaling, you compare corresponding sides using the correct basic equation.

How does the scale factor affect the size of a copy?

Draw the scaled copy. The size of the scale factor affects the size of the copy. When a figure is scaled by a scale factor greater than 1, the copy is larger than the original. When the scale factor is less than 1, the copy is smaller. When the scale factor is exactly 1, the copy is the same size as the original. . Triangle .

How is a ratio of a scale factor expressed?

A scale factor ratio can be expressed as a fraction, 1 2 1 2, or a colon, 1: 2 1: 2. A ratio measures the relationship between two things. You could create a ratio of left-handed students to all students, but that ratio is not a scale factor.