Respostas

2014-03-07T17:04:33-03:00
D(NP) = √[(x2 -x1)² + (y2 - y1)²] 

d(NP) = √[(-√2 -√2)² + (√2 + √2)²] 
d(NP) = √[(-2√2)² + (2√2)² 
d(NP) = √[4.2 + 4.2] 
d(NP) = √[8 + 8] 
d(NP) = √16 
d(NP) = 4