Answer:
The answer is B
Step-by-step explanation:
They both equal one 180 so add like terms and solve
Length of DE = 3-(-1) = 4
SIDE DE is a vertical line
horizontal distance between E and F is 3 - (-2) = 5
So the area of triangle DEF = 0.5 * 4 * 5 = 10 sq units
There is a possibility of 24 combinations I believe
