1) Refleksi titik P(2, 3) terhadap garis y = x lalu rotasi 90° berlawanan arah jarum jam menghasilkan? a) (-3,-2) b) (3,2) c) (2,-3) d) (-2,3) 2) Dilatasi titik R(3, -1) dengan faktor skala -2 terhadap pusat (1, 1) menghasilkan? a) (-5,-1) b) (5,3) c) (-5,3) d) (7,-5) 3) Rotasi titik S(-4, 3) sejauh 90° searah jarum jam terhadap pusat (2, -1) menghasilkan? a) (6,-3) b) (4,2) c) (-6,2) d) (2,3) 4) Refleksi segitiga A(1, 2), B(3, 2), C(2, 4) terhadap garis y = -x menghasilkan? a) (-2,-1), (-2,-3), (-4,-2) b) (-1,-2), (-3,-2), (-2,-4) c) (1,-2), (3,-2), (2,-4) d) (-1,-2), (-2,-3), (-4,-2) 5) Dilatasi titik T(4, -3) dengan faktor skala 3/2 terhadap pusat (-2, 1) menghasilkan? a) (7,-3) b) (3,-5) c) (8,-6) d) (4, -1) 6) Refleksi titik X(2, 5) terhadap garis x = -1, lalu rotasi 90° berlawanan arah jarum jam menghasilkan? a) (-7, -2) b) (-3, -2) c) (-7,2) d) (-5, -7) 7) Dilatasi titik Q(1, -2) dengan faktor skala -3 terhadap pusat (2, 1). a) (-3,5) b) (1, -6) c) (2, -1) d) (-5, 7) 8) Rotasi titik R(-3, 4) sejauh 270° berlawanan arah jarum jam terhadap titik asal menghasilkan? a) (-4, -3) b) (4,3) c) (3, 4) d) (-3, -4) 9) Titik S(2, 6) dilatasi dengan faktor skala 2 terhadap pusat (-1, 2). Hasilnya adalah? a) (5,4) b) (3, 10) c) (4, 6) d) (5, 8) 10) Segitiga dengan titik A(2, 1), B(4, 1), dan C(3, 3) direfleksikan terhadap garis y = -x. Tentukan koordinat bayangannya. a) (-1, -2), (-1, -4), (-3, -2) b) (-2, -1), (-4, -1), (-3, -3) c) (-1,-2), (-1,-4), (-3,-3) d) (-2, -1), (-4, -3), (-3, -2)
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Furqongotra
SMP
Kls 8
Matematika
Transformasi Geometri
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