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(mod 10) P3 Dilations
Hauen laguntzarekin: Childress
All transformations in this test are Dilations.
What is a Dilation?
Dilations
red or blue
enlarge or shrink
dog or cat
Dilations are changes caused by scale factors.
Dilated by 4 -->means x4
2
4
3
x4
8
16
Dilated by  1/3---->  means divide by 3
24
18
21
x  1/3
8
6
pre-image
(2,6)
Dilate a point by  5
x5
x5
multiply the x by 5
multiply the y by 5
(10,
image
)
(4,-7)
pre-image
Dilate  by 
3
(
image
,
)
(-9,-7)
pre-image
Dilate  by 
4
(
image
,
)
(8,10)
pre-image
Dilate  by 
1/2
(
image
,
)
(20,36)
pre-image
Dilate  by 
1/4
(
image
,
)
(8,-2)
pre-image
Dilate  by 
6
(
image
,
)
(24,42)
pre-image
Dilate  by 
1/6
(
image
,
)
(-4,-7)
pre-image
Dilate  by 
2
(
image
,
)
(-15,30)
pre-image
Dilate  by 
1/5
(
image
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
B'
A'
C'
(
(
(
,
,
,
A
)
)
)
B
C
Dilate by 2
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Dilate by  1/2
B'
A'
C'
(
(
(
,
,
,
)
)
)
B
A
C
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Dilate by  1/2
B'
A'
C'
(
(
(
,
,
,
B
)
)
)
A
C
Dilate by  7
5
7
10
8
image
dilate by  1/4
image
44
36
42
12
55
40
image
Dilate by  1/5
20
image
Dilate by 4
2
6
2.5
3.5
8
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
B'
A'
C'
(
(
(
,
,
,
B
)
)
)
A
Dilate by 3
C
Then dilate the image by  1/3
Dilate  point A   by   6
What is the new image-->A'' 
point A  ( 4,9)
(
,
)
Intereseko beste azterketa batzuk :
G Transformations Overview
Geoa -lesson- pythagorean theorem
Geo 3.7 Dilations
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