what does x equal? i need an understanding

283°?
Step-by-step explanation:
360-77=283?
that full whole thing is 360°
Answer:
13
Step-by-step explanation:
ok so angle BGD= 90 vertically opposite angles
angle CGB = 90 ( CGB + CGA = 180 and CGA is 90 so CGB = 180 - 90 = 90)
CGB + BGD = 180
CGB + 90 = 180
Angle EGB = 77 (V.O.A)
NOW angle CGB = 77 + X
so now
CGB + 90 = 180
77 + x + 90 = 180
77 + x = 90
x = 90-77
x= 13
please mark brainliest thx