Respuesta :

Answer:

x = 137

Step-by-step explanation:

All quadrilaterals have a sum in angles of 360

We can see the parallel angles are the same

One angle is 43 degrees

The angle to the left (if your looking at the picture right side up) is the same angle

subtract is by 360 because the total degrees is 360

360 - 43 = 317

317 - 43 = 274

Then divide 274 by 2 because the two angles that are remaining are the same degrees

274 divided by 2 = 137

x = 137