Geometry
Polygon Interior Angle
Interior angle of a regular polygon.
Formula
Formula
θ = (n−2)·180n
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| n | number of sides | integer (ℤ) | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givensides n = 6
Result120
Example 2
Givensides n = 8
Result135