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In an isosceles triangle, the vertex angle is thrice of either base angle. Find the measure
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2 thoughts on “class<br />In an isosceles triangle, the vertex angle is thrice of either base angle. Find the measure<br />triangle<br />​”

1. Answer:

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2. Answer:

   In an isosceles triangle base angles are equal

   let each base angle is x°

   so, vertex angle is 3x°

   sum if the three angles of a triangle is 180°

   so,

   3x+x+x=180

   => 5x=180

   => x=180/5

   => x=36

   so , each of the base angle is 36° and vertex angle is 36×3=108°

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