Respuesta :

theofilospetsas

Answer:

y=180-50+70

y=60

mrseercalf

Answer:

x = 160°

Step-by-step explanation:

Angles in a line add up to 180°

∴ 50° + y + 70° = 180°

y = 180° - (50° + 70°) = 60°

Angles in a quadrilateral add up to 360°

Since angle x is equal to the other unknown angle;

x = (360° - 40°) ÷ 2 = 160°

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