Octagonal Pyramid Roof

Formed of eight triangular identically pitched roof panels. Builders often choose this shape when they need to roof a building that’s round or nearly round. Instead of dealing with the awkward fractions that another shape might require, they simply divide 360 degrees into half, then half again, then half a final time, winding up with the 22 1/2-degree angle that’s needed to build an eight-sided roof.