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How to mark angles with a folding square?

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Carpenters square, folding squares, carpenter, carpentry, angles, woodwork, measuring, framing, right angle, stone masonry, building, construction, flooring, paving, DIYer. When you need to mark out angles for different applications, for example when producing a mitre cut or joint then you will need to use angles of 45° and 90°.
Carpenters square, folding squares, carpenter, carpentry, angles, woodwork, measuring, framing, right angle, stone masonry, building, construction, flooring, paving, DIYer.

Step 1 – Position workpiece

Place your workpiece onto a flat surface (workbench).

Carpenters square, folding squares, carpenter, carpentry, angles, woodwork, measuring, framing, right angle, stone masonry, building, construction, flooring, paving, DIYer.

Step 2 – Choose angle

Place the angle of the folding square on the area of the workpiece you want to mark.

Carpenters square, folding squares, carpenter, carpentry, angles, woodwork, measuring, framing, right angle, stone masonry, building, construction, flooring, paving, DIYer. Remember, if you are marking a 45° angle then you will need a locking folding square. Sliding folding squares that come with three different length sides (scalene triangle) do not contain angles of 45°.
Carpenters square, folding squares, carpenter, carpentry, angles, woodwork, measuring, framing, right angle, stone masonry, building, construction, flooring, paving, DIYer.

Step 3 – Line up angles

At the point you are going to mark an angle, line up the edges of the workpiece with the sides or bottom of the folding square that contains the angle. For a 45° angle, the bottom side needs to line up with the bottom side of the workpiece. The corner of the angle will need to be on the corner of the workpiece.

Carpenters square, folding squares, carpenter, carpentry, angles, woodwork, measuring, framing, right angle, stone masonry, building, construction, flooring, paving, DIYer. For a 90° angle, the two sides that form the angle need to be parallel to the edges of the area you want to mark.
Carpenters square, folding squares, carpenter, carpentry, angles, woodwork, measuring, framing, right angle, stone masonry, building, construction, flooring, paving, DIYer.

Step 4 – Mark angles

Hold the folding square firmly against the workpiece and mark the right angle using a pencil.

Carpenters square, folding squares, carpenter, carpentry, angles, woodwork, measuring, framing, right angle, stone masonry, building, construction, flooring, paving, DIYer. When marking a 45° angle, hold the folding square firmly and mark the angle using a pencil.