notes

1. Module 8.3 Lessons 4 and 5.notebook
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A triangle was dilated from center O by a scale
factor of r = 8. What scale factor would dilated the
figure to the original size?
Do Now:
HWModule 8.3 Lessons 4 & 5
Fundamental Theorem of Similarity
and First Consequences of FTS
p 29-30 #1,2,3

2. Module 8.3 Lessons 4 and 5.notebook
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Homework Answers p 19 #3,4,5

3. Module 8.3 Lessons 4 and 5.notebook
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3. Use the definition of dilation to describe
the lengths along this ray.
1. On the first line of your paper, mark a
point . We will use this as our center.
From point O, draw a ray OP.
Mark the point P a few lines down from the center.
Now, choose a P' farther down the ray, also on one of
the lines of the notebook paper. For example, you
may have placed point P, 3 lines down from the
center, and point P', 5 lines down from the center.
2.
Page 21

4. Module 8.3 Lessons 4 and 5.notebook
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P
P'
O
3. Use the definition of dilation to describe
the lengths along this ray.
1. On the first line of your paper, mark a
point . We will use this as our center.
From point O, draw a ray OP.
Mark the point P a few lines down from the center.
Now, choose a P' farther down the ray, also on one of
the lines of the notebook paper. For example, you
may have placed point P, 3 lines down from the
center, and point P', 5 lines down from the center.
2.
Find the Scale Factor

5. Module 8.3 Lessons 4 and 5.notebook
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May 25, 2016
4.
P
P'
O
5.
6.

6. Module 8.3 Lessons 4 and 5.notebook
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6.
4.
5.
P
P'
O
Q
Q'

7. Module 8.3 Lessons 4 and 5.notebook
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6.
4.
5.
P
P'
O
Q
Q'

8. Module 8.3 Lessons 4 and 5.notebook
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8.
9.
PQ ll P'Q'
P
P'
O
Q
Q'
P
P'
O
Q
Q'
PQ ll P'Q'
corresponding angles

9. Module 8.3 Lessons 4 and 5.notebook
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8.
9.
PQ ll P'Q'
P
P'
O
Q
Q'
P
P'
O
Q
Q'
PQ ll P'Q'
corresponding angles

10. Module 8.3 Lessons 4 and 5.notebook
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Page 23

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Page 22

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Page 25

16. Module 8.3 Lessons 4 and 5.notebook
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Page 26

17. Module 8.3 Lessons 4 and 5.notebook
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a. Determine the scale factor r.
b. Locate the center O of dilation.
Measure the segments to verify that
5
cm
10
cm
Turn to page 18 in your module packet

18. Module 8.3 Lessons 4 and 5.notebook
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a. Determine the scale factor r.
b. Locate the center O of dilation.
Measure the segments to verify that
r = 2
5
cm
O
10
cm
Turn to page 18 in your module packet

19. Module 8.3 Lessons 4 and 5.notebook
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Page 28

20. Module 8.3 Lessons 4 and 5.notebook
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y coordinate: 12
x coordinate: 12
A'B'
OB

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Not in your module

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Page 28

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Point A only.
1.
Page 29

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Page 30

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Page 30

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