1. Graph dilations on a coordinate plane.
center
enlargement
reduction
coordinate plane
coordinates
point of origin
Lesson 6 MI/Vocab

2. Draw a Dilation
Copy polygon PQRS on graph paper. Then draw the image of the figure after a dilation with center S by a scale factor of
Lesson 6 Ex1

3. Step 1 Use segment SP to locate point P'.
Draw a Dilation
Step 1 Use segment SP to locate point P'.
Step 2
Step 3 Repeat Steps 1 and 2 for points Q' and R'. Be sure to draw segment SQ before locating point Q'. Then draw polygon P' Q' R' S', where S = S'.
Lesson 6 Ex1

4. Copy polygon ABCD on graph paper
Copy polygon ABCD on graph paper. Then draw the image of the figure after a dilation with center A by a scale factor of 2.
Lesson 6 CYP1

5. Graph a Dilation
Graph triangle DEF with vertices of D(-6, 6), E(-2, 6) and F(-4, 2).The graph its image Triangle D’E’F’ after a dilation with a scale factor of 1/2.
Lesson 6 Ex2

6. Graph a Dilation
Lesson 6 Ex2

7. Graph a Dilation Answer:
Check Draw lines through the origin and each of the vertices of the original figure. The vertices of the dilation should lie on those same lines.
Lesson 6 Ex2

8. Interactive Lab: Dilations
Answer:
Interactive Lab: Dilations
Lesson 6 Ex2

9. Find and Classify a Scale Factor
In the figure, segment X′Y′ is a dilation of segment XY. Find the scale factor of the dilation, and classify it as an enlargement or as a reduction.
Lesson 6 Ex3

10. Find and Classify a Scale Factor
Write a ratio of the x- or y-coordinate of one vertex of the dilation to the x- or y-coordinate of the corresponding vertex of the original figure. Use the y-coordinates of X(–4, 2) and X'(–2, 1).
Answer:
Lesson 6 Ex3

11. In the figure, segment A′B′ is a dilation of segment AB
In the figure, segment A′B′ is a dilation of segment AB. Find the scale factor of the dilation, and classify it as an enlargement or as a reduction. A B C D
Lesson 6 CYP3

12. Let a represent the size of the pupil after dilation.
The size of the pupil after dilation is the size of the pupil before dilation.
Words
Variable
Let a represent the size of the pupil after dilation.
Equation
Lesson 6 Ex4

13. Answer: His pupil will be 9 millimeters in diameter once dilated.
Write the equation.
Multiply.
Answer: His pupil will be 9 millimeters in diameter once dilated.
Lesson 6 Ex4

14. A. 10 mm
B. 11 mm
C. 12 mm
D. 14 mm A B C D
Lesson 6 CYP4