Dilation (Math 8)

Presentation

•

Mathematics

•

8th Grade

•

Easy

•

CCSS

8.G.A.3, HSG.CO.A.2

Standards-aligned

Amber Moody

Used 49+ times

FREE Resource

5 Slides • 8 Questions

Dilation

Same shape, but it is an enlargement or a reduction.
The image to the right is an enlargement.
The center of dilation is the origin (0,0)

Multiple Choice

What is Dilation?

Dilation means to enlarge or reduce

Dilation means to reflect on something

Dilation means to like something

Dilation means to make something different by making it smaller

Multiple Choice

Does the image show a Dilation?

Yes

Multiple Choice

Does the image show a dilation?

Yes

Multiple Choice

When A (3, 6) is dilated by a scale factor of 2, what are the coordinates of A'?

(3, 6)

(1.5, 3)

(6, 12)

(12, 6)

Dilation Example

Scale Factor 2
k = 2
Center of dilation is (0,0)

Multiple Choice

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image? A(3,3) B(6,6) C(9,3)

A'(9,9) B'(18,18) C'(27,9)

A'(6,6) B'(9,9) C'(12,6)

A'(0,0) B'(3,3) C'(6,0)

A'(1,1) B'(2,2) C'(3,1)

Multiple Choice

Dilate Point A by a scale factor of 1/2

(-4,-4)

(-1,-4)

(-1,-1)

(-2,-2)

Multiple Choice

A dilation produces a similar figure

True

False

Multiple Choice

Enlargement or reduction? Find the scale factor!

It's a reduction; the scale factor is 2.

It's an enlargement; the scale factor is 2.

It's an enlargement; the scale factor is 1/2.

It's a reduction; the scale factor is 1/2.

Dilation

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