Making a pair of half-square triangles
While a half-square triangle, which is a square made of two right-angled triangles, can be made by sewing two triangles together, a faster way is to start with two squares and use the method below.
1Cut two squares, each 2.2cm (7⁄8in) larger than the desired finished size and place them right sides together, with the lighter colour on top.
2Using a pencil, mark a diagonal line in one direction across the wrong side of the lighter-coloured square.
3Pin, then machine stitch along each side of the marked line, stitching 6mm (1⁄4 in) from the line.
4Using a rotary cutter or scissors, cut along the pencil line.
5 Open out the pieces of fabric and press the seams, usually towards the darker fabric, to make…
