\"\"

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The perimeter of an isosceles triangle is \"\".

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An isosceles triangle one leg is \"\".

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Find the base of the triangle.

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The perimeter of an isosceles triangle formula is \"\".

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\"\"                 (Substitute \"\" and \"\")

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\"\"                      (Multiply)

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\"\"      (Subtract \"\" from each side)

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\"\"                  (Simplify)

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Therefore, base of the isosceles triangle is \"\".

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\"\"

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Base of the isosceles triangle is \"\".