Question

find the area of triangle formed by the points (5,2) (3,-5) (-5,-1)​

Answer 1

Answer:

If three vertices of triangle are given then, area of triangle

2

1

[x

1

(y

2

−y

3

)+x

2

(y

3

−y

1

)+x

3

(y

1

−y

2

)]

2

1

[5(−3+5)−9(−5−2)−3(2+3)]

2

1

[10+63−15]

2

1

[58]

areaofΔ=29sq.unit

Answer 2

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