Question

On a coordinate plane, triangle D E F has points (negative 8, 8), (10, negative 2), and (negative 8, negative 8).

Find the area of the triangle DEF.

Area =
square units

Answer 1

Base between (-8,8) and (-8,-8) = 16. Height (horizontal distance to (10,-2)) = 10 - (-8) = 18.

Area = 1/2 * 16 * 18 = 144.

Area = 144 square units