Comprehensively calculate the area, perimeter, interior angles, and exterior angles of regular polygons from equilateral triangles to icosagons. Just enter the number of sides and side length.
A regular polygon is a shape where all sides and interior angles are equal. This calculator automatically calculates area, perimeter, interior angle, exterior angle, and central angle by just entering the number of sides (3-20) and side length. Supports various regular polygons from equilateral triangles to icosagons.
Area is calculated using the formula (n Γ sΒ²) / (4 Γ tan(Ο/n)), interior angle as (n-2) Γ 180Β° / n, and exterior angle as 360Β° / n. Provides precise results using trigonometric functions.
Regular polygons are frequently used in architecture and interior design, such as hexagonal tiles, octagonal windows, and pentagonal decorations. Calculate accurate area and perimeter for material purchasing and construction planning.
Visually displays the shape of the regular polygon with SVG diagrams. The shape is automatically drawn according to the number of sides, making it intuitively understandable. Dark mode is also supported.
Useful for students learning the properties of regular polygons. You can see in real-time how interior and exterior angles change as you vary the number of sides, helping to develop mathematical intuition.
Responsive design allows convenient use on smartphones, tablets, and desktops anywhere. Calculate on-site immediately or use as educational material in the classroom.