Respuesta :
The measure of the angles are  ∠A = 33°  ,  ∠B = 33° and  ∠C = 114°
Supplementary angles are the angles whose sum is equal to [tex]180^{o}[/tex].
According to the question we have been given that the three angles that is ∠A , ∠B and ∠C are the supplementary angles that is their sum is 180°.
Let the measure of ∠A = x = ∠B
and the measure of ∠C = 81 + x
Now,
   ∠A + ∠B + ∠C = 180°
Putting the required values we get
    x° + x° + (81 +x )° = 180°
    2x° + 81° + x° = 180°
       3x° = 99°
        x° = 33°
Hence the measure of three angles are
    ∠A = 33°  ,  ∠B = 33° and  ∠C = 114°
Learn more about supplementary angles here : https://brainly.com/question/2046046
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