Segiempat WXYZ dengan titik sudutnya di W (2, -1) , X (5, -2) , Y (5, -5) ,dan Z (2, -4) terhadap garis y = 2 terhadap y = k A (x, y) → A' (x , 2k - y) Titik sudutnya Titik bayangan
W (2, -1) → W' (2 , (2×2 - (-1)) = W' (2 , 5)
X (5, -2)) → X' (5 , (2×2 - (-2)) = X' (5 , 6)
Y (5, -5) → Y' (5 , (2×2 - (-5)) = Y' (5 , 9)
Z (2, -4) → Z' (2 , (2×2 - (-4)) = Z' (2 , 8)
Semoga membantu ya..