o ângulo externo de um polígono é o dobro do inter. quanto vale o ângulo interno?
Soluções para a tarefa
Resposta:
60°
Explicação passo-a-passo:
Vamos chamar o ângulo interno de X, sabendo que o ângulo externo a outro é sempre suplementar, obtemos:
2x = 180° - x
3x = 180°
x = 60°
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