Miter Angle Calculator: 18-sided frame
Specific conversion page with reference context, calculator, and nearby values.
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18-sided frame converts to
10° miter
Use this as a quick reference for Miter Angle Calculator.
Value Details
Input: 18-sided frame
Output: 10° miter
Browse all reference values for Miter Angle Calculator
sides: 18 | interiorAngleDeg: 160 | exteriorAngleDeg: 20
Miter Angle Calculator
Enter the number of sides in a regular polygon frame to get miter and corner angles.
Miter Setting
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Nearby Reference Values
| Frame Type | Miter Angle | Interior Angle | Exterior Angle |
|---|---|---|---|
| 13-sided frame | 13.8462° miter | 152.3077° | 27.6923° |
| 14-sided frame | 12.8571° miter | 154.2857° | 25.7143° |
| 15-sided frame | 12° miter | 156° | 24° |
| 16-sided frame | 11.25° miter | 157.5° | 22.5° |
| 17-sided frame | 10.5882° miter | 158.8235° | 21.1765° |
| 18-sided frame | 10° miter | 160° | 20° |
| 19-sided frame | 9.4737° miter | 161.0526° | 18.9474° |
| 20-sided frame | 9° miter | 162° | 18° |
| 21-sided frame | 8.5714° miter | 162.8571° | 17.1429° |
| 22-sided frame | 8.1818° miter | 163.6364° | 16.3636° |
| 23-sided frame | 7.8261° miter | 164.3478° | 15.6522° |
Frequently Asked Questions
Common questions about Miter Angle Calculator, formulas, and expected usage.
How is miter angle calculated for a regular frame?
For an N-sided regular frame, miter angle = 180° / N, which is half of each exterior angle.
What is the difference between interior and miter angles?
Interior angle is the angle inside each corner; miter angle is the saw cut angle on each adjoining board end.
Can I use this for non-regular shapes?
No. This formula assumes all sides and corner angles are equal, as in regular polygons.
Why does a square use 45° miter cuts?
A square has four sides, so 180° ÷ 4 = 45° miter angle per piece end.
Methodology and Review
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Use this page as a fast lookup reference, then confirm final project values using applicable standards and manufacturer documentation.