Question

area = square units
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Explanation:

Step1: Identify coordinates of vertices

From the graph:
$E=(4, -3)$, $F=(-6, -3)$, $D=(-6, 7)$

Step2: Calculate base length

Base $EF$ is horizontal:
$EF = |4 - (-6)| = |10| = 10$

Step3: Calculate height length

Height $FD$ is vertical:
$FD = |7 - (-3)| = |10| = 10$

Step4: Compute triangle area

Use area formula $\text{Area} = \frac{1}{2} \times \text{base} \times \text{height}$:
$\text{Area} = \frac{1}{2} \times 10 \times 10$

Answer:

50 square units