Illustrative Mathematics - Geometry - Unit 3 - Lesson 3 - Formative Library | Library

Pentagon A'B'C'D'E' is the image of pentagon ABCDE  after a dilation centered at F. What is the scale factor of this dilation?

G.SRT.1.b

G.SRT.1.a

G.CO.2

8.G.3

G.SRT.2

A polygon has perimeter 12 units. It is dilated with a scale factor of \frac{3}{4}. What is the perimeter of its image?

9 units

12 units

16 units

It cannot be determined

G.SRT.1.b

G.SRT.1.a

G.CO.2

8.G.3

G.SRT.2

Triangle ABC is taken to triangle A'B'C' by a dilation. Which of these scale factors for the dilation would result in an image that was larger than the original figure?

\frac{4}{3}

1

\frac{3}{5}

\frac{13}{17}

G.SRT.1.b

G.SRT.1.a

G.CO.2

8.G.3

G.SRT.2

Dilate quadrilateral ABCD using center D and scale factor 2.

G.SRT.1.b

G.SRT.1.a

G.CO.2

8.G.3

G.SRT.2

Dilate Figure G using center B and scale factor 3.

G.SRT.1.b

G.SRT.1.a

G.CO.2

8.G.3

G.SRT.2

Polygon Q is a scaled copy of Polygon P.
The value of x is 6, what is the scale factor?

\frac{3}{4}

\frac{4}{3}

3

4

G.SRT.1.b

G.SRT.1.a

G.CO.2

8.G.3

G.SRT.2

Prove that segment AD is congruent to segment BC.

G.SRT.1.b

G.SRT.1.a

G.CO.2

8.G.3

G.SRT.2

This lesson is from Illustrative Mathematics. Geometry, Unit 3, Lesson 3. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/2/3/3/index.html ; accessed 29/July/2021.

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