Respuesta :

ummeragh

Answer:

answer is B. 100°

Step-by-step explanation:

if correct please I need brainlist

saadatk

Answer:

100°

Step-by-step explanation:

Opposite angles of a quadrilateral inscribed in a circle are supplementary, i.e., they add up to 180°.

The 80° angle and angle x are opposite each other, so:
x + 80° = 180°

x = 180° - 80°

  x = 100°