Answer:
A = 4 units²
Step-by-step explanation:
S(-5, -8), T(-3, -6), U(-6, -5)
Area of triangle given coordinates:
= 1/2 [x₁(y₂ - y₃) + x₂(y₃ - y₁) + x₃(y₁ - y₂)]
= 1/2 [-5(-6 - (-5)) + -3(-5 - (-8)) + -6(-8 - (-6))]
= 1/2 [5 - 9 + 12]
= 1/2 [ 8 ]
= 4