Determine 82143

Determine the size of the interior angles in an isosceles triangle if you know that the angle opposite the base is 15° greater than the angles at the base.

Correct answer:

α =  55 °
β =  55 °
γ =  70 °

Step-by-step explanation:

γ=15° + α α=β α + β + γ=180    α+α+(15+α)=180  3α=165  α=3165=55  α=55=55
β=α=55=55
γ=15+α=15+55=70



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Calculation of an isosceles triangle.
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