Page 11 - E – Modul Rotasi_Nur Hafizhah Husna

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2. Rotasi 180 Terhadap Titik Pusat (A, B) 03

a – xˡ = x – a

xˡ = -x + a + a

xˡ = -x + 2a

b – yˡ = y – b

yˡ = -y + b + b

yˡ = -y + 2b

(x, y) → (xˡ, yˡ) = (-x + 2a, -y + 2b)

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