When you lay a new floor and you will finish it then you find that the corners
in your house are not exact 90 degrees.

With this method you can cut or saw the right corner.

Step 1: What You Need

Bill of material:

A piece of Letter or A4 format (used) paper with one straight edge.
A pencil
A ruler or other thing with parallel edges.

if the piece of paper is to big fold in two.

Step 2: Arange the Paper

Place the paper in the corner of the room one edge against the wall and the other end a little out
of the wall

Step 3: Draw a Line

Use the ruler to draw a parallel line with the wall on the paper. By this way you transfer the corner on the paper.

Step 4: Fold the Paper

Fold the paper from the intersection of the paper edge with the other side of the paper and you have divided the corner.
Please take a look at the picture.
(one picture tells more then 1000 words)

Step 5: Draw the Half Corner on the Base Shoe

Lay your paper on the base shoe. The edge of the paper who touched the wall
is against the edge of the base shoe now you can draw the diagonal (half the corner)
on the base shoe.
Cut or saw on the line.