Question

if (-5,7 )(-4,-5 )and (-1,-6 )then find area of the triangle​

Answer 1

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Answer 2

Step-by-step explanation:

$area = 1 \div 2(x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2))$

(-5,7)=x1,y1

(-4,-5)=x2,y2

(-1,-6)=x3,y3

area=1/2[(-5)(-5-(-6)+(-4)(-5-7)+(-1)(7-(-5)]

=1/2((-5)(-5+6)+(-4)(-5-7)+(-1)(7+5))

=1/2((-5)(1)+(-4)(-12)+(-1)(12))

=1/2(-5+48-12)

=1/2(48-17)

=1/2(31)

=31/2

=15.5sq.units.