Question

Find the area of triangle whoses vertices are:(1,6) (3,0) (-3,-7).

Answer 1

1, 6. 3 , 0. -3 , -7

-1.-6. -1.-3. -1. -3

0. 0. 2. -3. -4. -10

1/2(2. -3

-4. -10)

1/2(-20-(-3)(-4))

1/2 (-20-12)

1/2(-32)

=-16

as area can't be negative so we accept it as positive so the answer is 16 Square units