Respuesta :

musiclover10045

The inside angles of a 4 sided shape when added together equal 360.

X = 360 - 50-130-120

X = 60 degrees.

gcantiga44

Answer:

60°

Step-by-step explanation:

In a four-sided shape, the total angle measures 360°.

So,

50 + 130 + 120 + x = 360

300 + x = 360

x = 360 - 300

x = 60°