Answer:
8 square units
Explanation:
For a triangle,
area = base × height / 2
We need to identify a base and a height for this triangle, and then use them in the area formula above.
Use BC as the base.
A height of a triangle is usually inside the triangle, but not always.
The height of a triangle is a segment that is perpendicular to the a side, or the line containing a side, and intersects the opposite vertex.
In this case, for base BC, the height is a segment from point (-2, 2) to point A. The length of the height is 4.
area = 4 × 4 / 2
area = 8 square units