Question

Find the value of the unknown x and y in the following diagram:

Answer 1

y + 120° = 180° (Linear pair)

y = 180° − 120° = 60°

x + y + 50° = 180° (Angle sum property)

x + 60° + 50° = 180°

x + 110° = 180°

x = 180° − 110°

x = 70°