Question

Find the lettered angle​

Answer 1

Step-by-step explanation:

y + 120 = 180 ( linear angles)

y = 180 - 120

y = 60

ABC + BCA + CAB = 180 (Angle sum property of triangle)

60 + BCA + 40 = 180

100 + BCA = 180

BCA = 180 - 100

BCA = 80

BCA + x = 180 (linear angles)

80 + x = 180

x = 180 - 80

x = 100