90°= ( x, y ) [tex]\to[/tex] ( -y, x )
90° = M( 7, -5 ) [tex]\to[/tex] M'( -(-5), 7 )
90° = M( 7, -5 ) [tex]\to[/tex] M'( 5, 7 )
jawaban terlampir pada gambar yaa
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90°= ( x, y ) [tex]\to[/tex] ( -y, x )
90° = M( 7, -5 ) [tex]\to[/tex] M'( -(-5), 7 )
90° = M( 7, -5 ) [tex]\to[/tex] M'( 5, 7 )
jawaban terlampir pada gambar yaa