Question

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

Answer 1

y = 90° (Vertically opposite angles)

x + x + y = 180° (Angle sum property)

2x + y = 180°

2x + 90° = 180°

2x = 180° − 90°

2x = 90°

x = `(90°)/2`

x = 45°