Observe the figure:
\The figure shown is a pentagon.
\Let and
are sides of the pentagon.
Sides of the pentagon are ,
,
,
and
.
Perimeter: Sum of the all sides.
\The pentagon perimeter is .
(Substitute
,
,
,
and
)
(Simplify)
Therefore, perimeter of the pentagon is .
The perimeter of the pentagon is .