Diketahui ABCD aadalah sebuah segi empat. ABCD direfleksikan terhadap garis y= 2 sehingga diperoleh bayangan dengan titik A'(-5,-4), B`(2,-2), C' (-4,-8), dan D'(2,-4). Tentukan koordinat A'B'C & D?????
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2014-04-05T14:05:12+07:00
Ksimpulan : x(a,b) → C y=h →x'(a,2h-b) jd : A (a,b) → C y=2 → A' (-5, -4) A (-5, b) → C y=2 → A' (-5, -4) -4 =2h-b -4 = 2.2-b -4 - 4= 4 - 4 -b -8 = -b 8 = b B (a,b) → C y=2→ B' (2,-2) B (2,b) → C y=2 → B'(2,-2) -2 = 2.2 - b -2 -4 = 4 - 4 -b -6 = -b 6 = b C (a,b) → C y=2 → C' (-4,-8) C (-4,b) → C y=2 → C' (-4,-8) -8 = 2.2 - b -8 -4 = 4-4-b -12= -b 12 = b D (a,b) → C y=2 → D' (2,-4) D (2,b) → C y=2 → D' (2,-4) -4 = 2.2-b -4 - 4= 4-4-b -8 = -b 8 = b