Question

The vertex angle A of isosceles triangle ABC measures 20 more than three times m angle b.find m angle c.


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Answer 1

Answer:

<C = 36°

Step-by-step explanation:

Let angle B be x

angle C = x (isosceles tria. have two angles same )

now,

angle A =3x

We know that sum of angle of triangle is 180°

<A+<B+<C = 180°

3x + x + x = 180°

5x =180°

x =36°

Hence ,

<C = 36 ° .

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