SOLUTION: if triangle abc is isosceles, angle b is the vertex angle. ab=20x-2, bc=12x+30 and ac=25x, find perimeter of triangle abc

Question 919813: if triangle abc is isosceles, angle b is the vertex angle. ab=20x-2, bc=12x+30 and ac=25x, find perimeter of triangle abc
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

if triangle abc is isosceles, angle is the vertex angle, , and , find perimeter of triangle
Since the triangle is isosceles, }, so:
solve for

then

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=>

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and

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perimeter of triangle :

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