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Find the area of triangle whose vertices are (1,-2) (2,3) and (4,5)​

User Lyosef
by
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2 Answers

3 votes

Answer:

4 units²

Explanation:

User Manjeet Barnala
by
8.6k points
3 votes

Answer:

4 units²

Explanation:

Calculate some vectors from the point (2,3).

Vector A = <1, 5>

Vector B = <-2, -2>

The area of the triangle is 1/2 * (the magnitude of the cross product of the vectors)

A × B = -2 + 10 = 8

the magnitude of 8 is 8.

Therefore 1/2 * 8 = 4

User Arkadiusz Raszeja
by
8.1k points

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