100 degrees is correct
This states that ABC and DEF are congruent. we know know that we have 50 + 30 + X = 180
50 + 30 = 80
180 - 80 = 100
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100 degrees is the right answer. Good luck! and have a blessed day!
the answer is. -82562234434584
first i plotted all my points on a grid graph
i made sure all of them were in the correct quadrant
then i saw it was a trapezoid or a quadrilateral