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Presentation
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Mathematics
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3rd Grade
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Practice Problem
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Hard
ERLINA WIJAYANTI
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Transformasi geometri "Refleksi"
By ERLINA WIJAYANTI
TRANSFORMASI GEOMETRI "Refleksi"
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Refleksi = pencerminan.
jarak benda ke cermin
=
jarak cermin ke bayangan
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refleksi terhadap matematika dibagi menjadi beberapa jenis yaitu:
1. Refleksi terhadap sumbu y
4
2. Refleksi terhadap sumbu x
5
Refleksi terhadap titik asal (0, 0)
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4. Refleksi terhadap garis y=x
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5. Refleksi terhadap garis y = -x
Contoh : tentukanlah bayangan titik A(2, 4) jika direfleksikan terhadap garis y = -x
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6. Refleksi terhadap garis x=a
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7. Refleksi terhadap garis y=b
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8. Refleksi terhadap titik p(a, b)
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Rangkuman Rumus Refleksi
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Latihan.
1. tentukanlah bayangan titik B(-2, 7) oleh refleksi berikut
a. sumbu x
b. garis y=-x
c. garis x=-5
2. Bayangan titik A oleh refleksi terhadap garis x=-1 adalah A'(5, 1). Tentukanlah bayangan titik A, jika direfleksikan terhadap titik (0, 0)
Transformasi geometri "Refleksi"
By ERLINA WIJAYANTI
TRANSFORMASI GEOMETRI "Refleksi"
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