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Analyzing One-Variable Relationships in Context

The perimeter of a triangle is the sum of its three sides. has the sides and Adding these, we can create an algebraic expression that describes the perimeter of the triangle. The triangle has the sides and We can create an expression for the perimeter of this triangle as well. Since the perimeters are equal, we can equate the expressions, and solve for
Knowing that we can find the side lengths of both triangles by substituting this value into the corresponding expressions.
Expression Side length
 

Therefore, 's side lengths are and and the side lengths of are and