(05.02) Find the measure of angle x in the figure below:
55
45
80
55
100

Answer: x = 70
Step-by-step explanation:
Sum of angles in a triangle is 180
55 + 45 + y = 180
110 + y = 180
(110 - 110) + y = (180 - 110)
y = 70
Vertical angles are congruent so y = x
x = 70