What you provide
What you provide
- Number of sides, using the same scenario as the other inputs
- Side length expressed in units, using the same scenario as the other inputs
MATH / PLANE GEOMETRY
Regular Polygon Area Calculator
Calculate area and perimeter of a regular polygon. Inspect the equation, substituted values, result, and interpretation limits in one guided workspace.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
Calculate area and perimeter of a regular polygon. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
Calculation path
A=ns^2/[4 tan(180/n)]
What you receive
What you receive
- Polygon area in square units from the stated equation
- A symbolic formula plus substituted working with your values
- Visible assumptions, field guidance, and an authoritative learning reference
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
Coordinates and lengths use one consistent Cartesian scale; rounding is applied only to the displayed result.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
Reviewed reference factors