This document provides an overview of formulas for calculating perimeter and area of different shapes in geometry. It explains that perimeter is the distance around a shape and is calculated by adding up the lengths of all sides. Area is the space within a shape and is measured in square units. Formulas are provided for calculating the perimeter and area of squares, rectangles, parallelograms, triangles, and circles. Various examples are also included to demonstrate applying the formulas to geometry problems.