G3.2 Dilations Practice

Presentation

•

Mathematics

•

9th - 12th Grade

•

Easy

•

CCSS

8.G.A.3, HSG.CO.A.2, HSG.CO.B.6

Standards-aligned

Maria Decker

Used 15+ times

FREE Resource

7 Slides • 18 Questions

Dilations & Scale Factor

To dilate from the origin, we just need to multiply!

Review from Yesterday

Multiple Choice

Point D is dilated by a scale factor of 1.5, centered at the origin. What's the new coordinate point?

(-6, 4)

(-3, 2)

(-12, 8)

(-9, 6)

Hotspot

Triangle JKL is dilated by a scale factor of $\frac{1}{2}$ . Where will point K' be located? (Pick ONE spot!)

Draw

Dilate ΔABC centered at the origin by a scale factor of 2.

Scale Factor

Dropdown

The blue quadrilateral is the

, making this dilation a(n)

Multiple Choice

What is the scale factor here?

0.2

0.6

2.5

3.5

Fill in the Blanks

What is the scale factor when quadrilateral IJKL is dilated?

Multiple Choice

What is the correct scale factor for this dilation?

2.5

1.5

3.5

Dilations Not Centered at the Origin

The points will still move in a straight line toward or away from the center point!

Dilations can be centered anywhere!

Multiple Choice

What is the scale factor of this dilation?

$2$

$3$

$\frac{1}{3}$

$\frac{1}{2}$

Multiple Choice

What are the coordinates for the center of dilation?

(2, 9)

(7, 1)

(0, 0)

(2, -3)

Multiple Choice

What are the coordinates for the center of dilation?

(-1, 4)

(0, 0)

(3, 1)

(7, -9)

Hotspot

Segment CD is dilated from point O by a scale factor of 4. Where are C' and D' located?

(Choose TWO points, one for C and one for D.)

The Rest of the Transformations

Labeling

Label each of the transformations shown.

Drag labels to their correct position on the image

Dilation

Reflection

Translation

Rotation

Multiple Choice

Is the picture being reflected in the y-axis or x-axis?

y-axis

x-axis

Neither, this is a translation

Neither, this is a rotation

Multiple Select

Rigid motion transformations include

Rotations

Reflections

Translations

Dilations

Multiple Choice

Name the transformation.

Translation

Reflection

Rotation

Dilation

Multiple Choice

Identify the transformation.

Reflection across y-axis

Rotate 90° counter clockwise

Translation 5 units left, and 1 unit up.

Dilation by a scale factor of 4

Multiple Choice

Triangle ABC will be dilated by a scale factor of 1/2. What will be the coordinates of C'?

(-1, -2.5)

(12, 6)

(3, -1.5)

(0, 1.5)

Poll

How do you feel about dilations and rigid motions?

It's easy!

I feel pretty good.

I need more practice.

Help! I'm so lost!

Dilations & Scale Factor

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