Dilations and Scale Factor Practice

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure but maintains its shape, defined by a scale factor.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a figure during a dilation.

Front

If the scale factor is greater than 1, what type of transformation is it?

Back

It is an enlargement.

Front

If the scale factor is less than 1, what type of transformation is it?

Back

It is a reduction.

Front

How do you find the scale factor when given the coordinates of a point before and after dilation?

Back

Divide the x-coordinate of the image by the x-coordinate of the preimage.

Front

Back

Front

What is the scale factor if point A (8, 12) is dilated to point A' (2, 3)?

Back

Front

If a triangle is dilated by a scale factor of 2, what happens to its area?

Back

The area of the triangle increases by a factor of 2^2 = 4.

Front

What is the relationship between the scale factor and the dimensions of a figure?

Back

The dimensions of a figure are multiplied by the scale factor during dilation.

Front

If a dilation has a scale factor of 3/5, what can we classify it as?

Back

It is classified as a reduction.