​​the average of two non-congruent angles of an isosceles triangle is 65. find the value of these two non-congruent angles?

Dear student
We know, in an isosceles triangles two angles are equal.Let the  two equal angles be x° each.and unequal angle by y°Given: Average of non-congruent angles=65°x+y2=65°x+y=130°x=130°-y     ....(1)Also, by angle sum property of x+x+y=180°2x+y=180°2(130°-y)+y=180°   using 1260°-2y+y=180°y=80°and x=130°-yx=130°-80°x=50°
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