Question

What is the area of the triangle? (-5,-2) (-3,5) (1.-2) 0 square units​

Answer 1

Area = 21 Sq units

Explanation:

Area= 1/2[(x1y2 + x2y3 + x3y1) - (x2y1 + x3y2 + x1y3)]

Area = 1/2[(-5×5 +-3×-2+1×-2) - (-3×-2+1×5+-5×-2)]

Area = 1/2(-42)

Area = -21 sq units

Area = 21 sq units (The area is negative because it is below the x-axis.)