Question

HELP ME ASAP.

Triangle GHI, with vertices G(5,-8), H(8,-3), and I(2,-2), is drawn inside a rectangle. What is the area, in square units, of triangle GHI?

Answer 1

area of triangle GHI =16.5 unit ^2

Explanation:

triangle B =3 unit^2

triangle A = 9unit^2

triangle C = 7.5 unit^2

so

area of rectangle = 6 unit × 6 unit

= 36 unit^2

area of triangle GHI = 36 unit^2 - ( 3+9+7.5) unit^2

= 36unit^2 - 19.5unit^2

= 16.5 unit ^2