"Andy" wrote in message
om...
Hoe do i get the angle for mitre joints in my hexagonal bay window ? I
know you need a bevel and protractor, but is there a formula you
use....? Help

Using a formula is dangerous as the angles or lengths might not all be equal.
Why don't you just set the bevel to the internal angle of the existing skirting?
Then to get the angle of cut for the mitre, either measure this with the
protractor and divide by 2, or (even easier) mark the bevel angle onto paper,
cut it out and fold in half.

The formula for finding the internal angles of any _regular_ polygon is:
180° - (360° / No of sides)