Dilations Flashcard

Front

If the scale factor of a dilation is greater than 1, the image will be:

Back

Enlarged or magnified

Front

A dilation uses the scale factor or a _____ in order to make a figure larger or smaller.

Back

ratio

Front

What is the scale factor of a dilation that enlarges a figure by 2?

Back

2

Front

Given figure DEF with coordinates D(-2,3), E(1,4), F(-3,5). What would the new coordinates be after a translation of 3 units left and 2 units up, a reflection over the y-axis, a rotation of 90 degrees clockwise, and a dilation with a scale factor of 2?

Back

D''''(10, -10), E''''(12, -4), F''''(14, -12)

Front

What is the algebraic rule to represent a dilation using a scale factor of .75?

Back

Front

What happens to a figure when the scale factor of a dilation is less than 1?

Back

The figure is reduced or shrunk.

Front

What is the effect of a scale factor of 1 in a dilation?

Back

The figure remains unchanged.

Front

How do you determine the new coordinates of a point after a dilation?

Back

Multiply the original coordinates by the scale factor.

Front

What is the scale factor if a figure is reduced to half its size?

Back

0.5

Front

What is the relationship between the original figure and the dilated figure?

Back

They are similar figures.