Tentukan bayangan titik A (2,-1) ,B (5,3) ,C (-2,4) jika dicerminkan terhadap a. garis x=2 b. Garis y=x c. Garis y=-x Plis bantu ini penting

A(2,-1) B(5,3) C(-2,4)

DICERMINKAN TERHADAP x = 2
(x', y') = (2h – x, y)
A'(2 × 2 – 2, -1) => A'(2, -1)
B'(2 × 2 – 5, 3) => B'(-1, 3)
C'(2 × 2 – (-2), 4) => (6, 4)

DICERMINKAN TERHADAP y = x
(x', y') = (y, x)
A'(-1, 2)
B'(3, 5)
C'(4, -2)

DICERMINKAN TERHADAP y = -x
(x', y') = (-y, -x)
A'(1, -2)
B'(-3, -5)
C'(-4, 2)