What is the area of the triangle

History

1 answer:

nlexa [21]2 years ago

7 0

Answer:

<u>3 unit²</u>

<u></u>

Explanation:

The figure attached shows the three points, Q(-2,5), R(4,5), and S(-5,4), in a coordinate plane.

The points Q and R have the same y-coordinate, then if you set them as the base of the triangle, the height from S to Q is the altitude:

Base: 4unit - (-2unit) = 4unit + 2unit = 6 units

Altitude: 5unit - 4unit = 1 unit

Area of a triangle = base × altitude / 2

Area of the triangle QRS: 6unit × 1unit / 2 = 3 unit²

That answer does not match either answer choice. But it is the area of a triangle with the given vertices Q,R,S.

If your vertices are others, you can just follow the same procedure: find the base and the altitude and use the formula for the area used above.

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