\"\"

\

Since \"\" is an equalateral triangle. So, all of the sides are congruent.

\

Let \"\".

\

\"\"                (Substitution)

\

\"\"                (Add 5 to each side)

\

\"\"                           (Subtract 5x from each side)\"\"

\

Use  \"\" to find the length of each side.

\

\"\"                      (Given)

\

\"\"                   (Substitute \"\")

\

\"\"                       (Multiply: \"\")\"\"

\

\"\"                  (Given)

\

\"\"               (Substitute \"\" )

\

\"\"                        (Simplify)\"\"

\

\"\"               (Given)

\

\"\"            (Substitute \"\" )

\

\"\"                       (Simplify)\"\"

\

For \"\", \"\" , and the measure of each side is 25.