Dilations and Scale Factor Flashcard

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure but keeps its shape, either enlarging or reducing it.

Front

What is the scale factor in a dilation?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation.

Front

If the scale factor is 1/2, what happens to the size of the figure?

Back

The figure is reduced to half its original size.

Front

What are corresponding sides in similar figures?

Back

Corresponding sides are sides in two or more figures that are in the same relative position.

Front

How do you find the image of a point under dilation?

Back

Multiply the coordinates of the point by the scale factor.

Front

What is the image of point B (-10, -6) under a dilation with scale factor k = 1/2?

Back

(-5, -3)