Answer:
Area=45
Step-by-step explanation:
Area=AC*BD/2=V12^2+(-9)^2*V6^2+8^2=(V144+81)*V36+64/2=V225*6/2=15*6/2=45
Δ ABC ≡ Δ DEF
⇒ ∠DFE = ∠ACB = 50°
.
<u>Solve x:</u>
x - 8 = 50
x = 58°
Answer: x = 58°