1.

In an isosceles triangle, if the vertex angle is twice the sum of the base angles, then the measure of vertex angle of the triangle is(a) 100°(b) 120°(c) 110°(d) 130°

Answer» In an isosceles triangle, if the vertex angle is twice the sum of the base angles, then the measure of vertex angle of the triangle is



(a) 100°



(b) 120°



(c) 110°



(d) 130°


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