Respuesta :

Answer:

111

Step-by-step explanation:

The sum for a 7-sided interior polygon is 900

126+158+120+125+121+139=789

900-789=111

Answer:

x = 111°

Step-by-step explanation:

x + 120+158+126+125+121+139= 900°

x + 789 = 900

x = 900 - 789

x = 111

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