Question

# In the following figure, AB and CD are intersecting at O, and if = 40°, then the values of x and y are

- 30°, 40°
- 60°, 30°
- 90°, 40°
- 20°, 40°

Hint:

### Use angle sum property and vertically opposite angles

## The correct answer is: 20°, 40°

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