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Find the unknown angle measures.

In an isosceles triangle two of the angle measures are equal and one is not. The unequal angle measure is 77 degrees. The whole triangle is 180 degrees. Find the unknown measures

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Let the unknown equal Angle measures be x

now, according to question :

  • [tex]x + x + 77 = 180[/tex]

  • [tex]2x = 180 - 77[/tex]

  • [tex]2x = 103[/tex]

  • [tex]x = \dfrac{103}{2} [/tex]

  • [tex]x = 51.5 \degree[/tex]

hence, the unknown equal angles are 51.5° each !!

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