Recordando ângulos opostos pelo vértice

Oi filha querida,

Já vimos esse assunto em 2016, para recordá-lo, veja este post. Vamos complementar o estudo com alguns exercícios simples.


Exercícios

  1.  Obtenha o valor de Y:
    opv1
  2. Obtenha o valor de X:
    opv2

Beijo do pai!

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