
Dilatasi (Transformasi)
Presentation
•
Mathematics
•
6th - 8th Grade
•
Hard
A. Aswina
Used 14+ times
FREE Resource
9 Slides • 2 Questions
1
DILATASI
A(3,9)
B(3,3)
C(6,3)
A₂(1,3)
B₂(1,1)
C₂(2,1)
PA₂ = 𝟏
𝟑× (PA)
PB₂ = 𝟏
𝟑× (PB)
PC₂ = 𝟏
𝟑× (PC)
Faktor Skala
2
DILATASI
A(3,9)
B(3,3)
C(6,3)
A₃(6,18)
B₃(6,6)
C₃(12,6)
PA₃ = 𝟐 × (PA)
PB₃ = 𝟐 × (PB)
PC₃ = 𝟐 × (PC)
Faktor Skala
A(3,9)
B(3,3)
C(6,3)
3
A₄(9,27)
B₄(9,9)
C₄(18,9)
A(3,9)
B(3,3)
C(6,3)
A(3,9)
𝟑,𝑶(𝟎,𝟎) A₄(9,27)
B(3,3)
𝟑,𝑶(𝟎,𝟎) B₄(9,9)
C(6,3)
𝟑,𝑶(𝟎,𝟎) C₄(18,9)
(x,y)
𝒌,𝑶(𝟎,𝟎) (kx,ky)
4
5
10
15
20
25
30
5
10
15
20
-5
-10
-15
-5
-10
A
B
C
A’
B’
C’
(x,y)
𝒌,𝑶(𝟎,𝟎) (kx,ky)
A(7,10)
𝟐,𝑶(𝟎,𝟎) A’(14,20)
B(4,-6)
𝟐,𝑶(𝟎,𝟎) B’(8,-12)
C(-2,3)
𝟐,𝑶(𝟎,𝟎) C₄(-4,6)
5
6
7
8
5
10
15
20
25
30
5
10
15
20
-5
-10
-15
-5
-10
A(10,6)
P(6,3)
A’(14,9)
A(10,6)
𝟐,𝑷(𝟔,𝟑) A’(14,9)
A(10,6)
𝟐,𝑷(𝟔,𝟑) A’(6+2(10-6), 3+2(6-3))
Tentukan koordinat A’ yang
merupakan bayangan dari
A(10,6) setelah didilatasi dengan
pusat dilatasi di titik P (6, 3) dan
faktor skala 2
(x,y)
𝒌,𝑷(𝒂,𝒃) (a+k(x-a), b+k(y-b))
9
(x,y)
𝒌,𝑷(𝒂,𝒃) (a+k(x-a), b+k(y-b))
K(2,0)
𝟐,𝑷(𝟏,𝟒)
K’(1+2(2-1), 4+2(0-4))
K’(1+2(1), 4+2(-4))
K’(1+2, 4-8)
K’(3, -4)
L(3,0)
𝟐,𝑷(𝟏,𝟒) L’(1+2(3-1), 4+2(0-4))
L’(1+2(2), 4+2(-4))
L’(1+4, 4-8)
L’(5, -4)
M(3,2)
𝟐,𝑷(𝟏,𝟒)
M’(5,0)
N(2,2)
𝟐,𝑷(𝟏,𝟒)
N’(3,0)
10
Multiple Choice
Jika titik A dengan koordinat (4,6) di dilatasi dengan faktor skala 2 dengan pusat titik O maka koordinat bayangan titik A adalah ...
(2,3)
(6,8)
(8,12)
(12,18)
11
Multiple Choice
Titik W berkoordinat (2,3) di dilatasikan dengan pusat dilatasi (1,2) dan faktor skala 3, maka koordinat bayangan titik W adalah ...
(4,5)
(5,6)
(6,7)
(7,8)
DILATASI
A(3,9)
B(3,3)
C(6,3)
A₂(1,3)
B₂(1,1)
C₂(2,1)
PA₂ = 𝟏
𝟑× (PA)
PB₂ = 𝟏
𝟑× (PB)
PC₂ = 𝟏
𝟑× (PC)
Faktor Skala
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