After learning to make a square, the next step is the triangle. Just like the square if you are not ready to purchase a rotary cutter and mat. You will need to make a freezer paper pattern.How I do my Square’s This post may contain affiliate links. I will receive a few cents if you click to their site and purchase
Take the FINISHED size of the square you want and add 7/8 of an inch. example: for a finished size 2 inch square you will cut your fabric 2 7/8″ x 2 7/8″
for a finished size 3 inch square you will cut your fabric 3 7/8″ x 3 7/8″ for a finished size 4 inch square you will cut your fabric 4 7/8″ x 4 7/8″
And so on, either make you freezer paper pattern or up with a rotary cutter and ruler.
I’ve used a 3 inch FINISHED Square cut 3 7/8″ x 3 7/8″A light and a dark.
On the Wrong side of the light fabric draw a line from corner to corner.
This is the cutting line NOT sewing line
On your sewing machine sew a straight seam, 1/4″ from the line.
Turn and do the same thing on the other side.
(when I have many to sew, I do chain piecing, one right after another, not stopping the machine until all finished and then turn and do the other side) If NEW do them one at a time.