Dilation Review

Presentation

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Mathematics

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8th Grade

•

Medium

•

CCSS

8.G.A.3, 8.G.A.4, HSG.CO.A.2

Standards-aligned

Mr. Torres

Used 4+ times

FREE Resource

3 Slides • 8 Questions

Dilation Lesson Review

LT: I can determine the rule of dilation and write the coordinates when given the rule of dilation.

Open Ended

Quick Write: How do you know that an image has gone through a dilation?

Type response here

Learning Target

I can determine the rule of dilation and write the coordinates when given the rule of dilation.

Review Lesson on Dilation

The pre-image and image have the same shapes but different sizes.

The angles of similar shapes are the same.

Similar Shapes

The scale factor makes an enlarges or shrinks an image by multiplying all the coordinates by a constant factor.

Applying the Scale Factor

Characteristics of Dilation

LT: I can determine the rule of dilation and write the coordinates when given the rule of dilation.

Multiple Choice

Tell whether the transformation is a dilation. Explain.

Yes, scale factor is the same.

No, scale factor isn't the same.

Multiple Choice

Point A (-10, 4) is dilated by a scale factor of 0.5. What are the coordinates for A'?

(-5, 2)

(5, -2)

(-20, 8)

(20, -8)

Multiple Choice

Does the image show a Dilation?

Yes

Multiple Choice

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

$\frac{1}{2}$

$\frac{1}{4}$

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

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

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

Multiple Choice

The red triangle has been dilated by a scale factor of 1/4, which triangle is it's new image?

green triangle

red triangle

black triangle

none of these

Multiple Choice

Dilate Point B by a scale factor of 1/2

(-2,-2)

(1.5,-4)

(-1,-1.5)

(-1.5, 1)

Dilation Lesson Review

LT: I can determine the rule of dilation and write the coordinates when given the rule of dilation.

Show answer

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