How to mark the 26.6° cut line at the bottom of the legs
(1) Square a line from x to y (fig.8) across the leg.
(2) Mark point z along the leg. The distance from z to x should be exactly half of the distance from x to y.
For example: if the distance from x to y is 100mm (4"), then the distance from z to x should be 50mm (2").
(3) Draw a line from z to y. This is the cut line and is 26.6° off square.