Răspuns:
{-2,3}x{-3.1}=
{(-2,-3);((-2,1);(3,-3);(3,)}
M(-2,-3)
N(-2,1)
P(3,-3)
Q((3,1)
MNPQ dreptunghi
Determini
MN=√(xM-xN)²+(yM-yN)²=
√(-2-(-2))²+(-3-1)²=
√(-2+2)²+(-4)²=√(0²+16)=√16=4
MN=4
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NP=√[(3-(-2))²+(-3-1)²]=
√[(3²+2²)+(-4)²=√(9+16)=√25=5
Perimetru=2(L+l)=2*5*4=40
Aria =L*l=5*4=20
Explicație pas cu pas: