Exterior Angle Property of a Polygon

Q.
In the given figure, ABCD is a rhombus, then the value of ′𝑥′ is:​

1. ${90}^{\circ }$
2. ${45}^{\circ }$
3. ${60}^{\circ }$
4. ${30}^{\circ }$

Q.

Consider the figure:

If $\angle A={50}^{\circ }$​, $\angle B={70}^{\circ }$​, and $x=2y,$ then find the value of $x+2y.$ [3 Marks]