Understanding Scale Factors in Dilations

Understanding Scale Factors in Dilations

Assessment

Interactive Video

Mathematics

8th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial reviews the concept of scale factor and dilations in geometry. It explains that the scale factor is a fraction of the new measurement over the original. The tutorial demonstrates how to calculate the scale factor using side lengths and ordered pairs. It also covers dilations centered at the origin and uses a guess-and-check method to find the scale factor for a dilation, emphasizing the importance of understanding these concepts in eighth-grade geometry.

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the scale factor in a dilation?

A sum of the new and the original

A difference between the new and the original

A fraction of the new over the original

A ratio of the original over the new

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the problem, which rectangle is considered the 'new' one?

Rectangle ABCD

Rectangle XY Prime

Rectangle ABCD Prime

Rectangle XY

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you calculate the scale factor using side lengths?

By adding the side lengths of the new and original

By subtracting the side lengths of the original from the new

By dividing the side length of the new by the original

By multiplying the side lengths of the new and original

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the scale factor if the side length of the new rectangle is 9 and the original is 3?

1

4

2

3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can ordered pairs be used to find the scale factor?

By subtracting the x-coordinate of the original from the new

By adding the x-coordinates of the new and original

By dividing the x-coordinate of the new by the original

By multiplying the x-coordinates of the new and original

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the coordinates of a point when a scale factor of 3 is applied?

They are subtracted by 3

They are multiplied by 3

They are divided by 3

They remain the same

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the center of dilation in the given problem?

Point C

Point B

The origin

Point A

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