Calculate the inside and outside corners of a regular twenty-hemi.

In order to perform correct and accurate calculations, we need a special formula, which is used in such cases.

It looks like this:

180 * (number of sides – 2).

This formula is used to find the sum of the angles of a convex square with any number of sides.

And based on this theorem, we can find the inner angle.

To do this, divide the result by 27.

180 * (27 – 2) / 27 = 166.67.

Now let’s find the outer corners.

360 – 166.67 = 193.33.