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Learn what perimeter is and how to calculate it for different shapes such as circle, triangle, square, rectangle, etc. Find the perimeter formulas, examples, units and quiz on this topic. Perimeter Formulas Perimeter is the path or boundary around a shape or can also be known as the outline of a shape. In geometry, there are different kinds of shapes that we encounter from 2D shapes to 3D shapes. Perimeter formulas cover the formulas of various 2-d shapes in geometry. Let's learn the various formulas of various shapes and solve a few examples as well. Find the perimeter of 12 popular shapes with this intuitive perimeter calculator - quick, accurate, and user-friendly! Perimeter is the distance around a two-dimensional shape or a one-dimensional line. Learn how to calculate the perimeter of various shapes, such as circles, triangles, polygons, and curves, using formulas and examples.
