
TRANSFORMASI GEOMETRI
Presentation
•
Mathematics
•
12th Grade
•
Medium
Wahyu Sulistyorini
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5 Slides • 5 Questions
1
TRANSFORMASI GEOMETRI
By Wahyu Sulistyorini
Assesmen Diagnostik-Kognitif
Matematika Kelas XI
Semester 4
Guru Mapel: Wahyu Sulistyorini
2
3
TRANSLASI (pergeseran)
Jika translasi T = (a b) memetakan titik P(x,y) ke
titik P'( x', y' ) maka berlaku rumus:
x' = x + a
y' = y + b
4
Contoh:
1. Titik A(5,6) ditranslasi oleh T = (2 3)
Tentukan titik hasil translasinya !
Jawab:
A' = ( x + a, y + b)
= ( 5 + 2, 6 + 3) = ( 7 , 9)
2. Tentukan bayangan B(-4,2) ditranslasikan
berturut-turut oleh (2 2) dan (4 1`)!
Jawab:
Translasi.....(2 2) + (4 1) = (6 3)
B' = ( x + a, y + b)
= ( -4 + 6, 2 + 3)
= ( 2 , 5 )
5
Petunjuk tugas:
Untuk no 1 dan 2 soal pilihan ganda
Untuk no 3 soal isian
Untuk no 4 dan 5 soal essay
Perhatikan lamanya waktu pengerjaan,sehingga soal bisa terjawab semua dengan hasil maksimal.
6
Multiple Choice
T = (a b) dan A(5,8). Bayangan titik A oleh translasi T adalah A'(3,4)
Maka nilai a dan b adalah.........
8 dan 12
2 dan 4
-8 dan -12
-2 dan -4
11 dan 9
7
Multiple Choice
Persamaan bayangan garis y - 5x + 5 = 0 oleh translasi T = (-1 3) adalah......
y + 5x - 3 = 0
y - 5x - 3 = 0
3y - x - 3 = 0
5y - 3x - 3 = 0
y - 5x - + 3 = 0
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Fill in the Blanks
Type answer...
9
Open Ended
Persegi panjang ABCD dengan A(1,1); B(5,1); C(5,6) dan D(1,6) ditranslasikan oleh
(-4 3) diteruskan oleh translasi (x y) menghasilkan bayangan A'(4,8)
a. Tentukan translasi (x y)
b. Tentukan koordinat titik yang lain
10
Open Ended
Tentukan bayangan titik A(2,2) dan B( 6,4) jika ditranlasi oleh (2 1) dan (-3 4)!
TRANSFORMASI GEOMETRI
By Wahyu Sulistyorini
Assesmen Diagnostik-Kognitif
Matematika Kelas XI
Semester 4
Guru Mapel: Wahyu Sulistyorini
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