NOTE: Use the following formulas for calculating setting triangle measurements for other size blocks. Round measurements to the nearest 1/8 inch. Remember to add finished sashing measurement to block size when figuring size for setting triangles on a sashed quilt.
Corner Setting Triangles (Half Square):
... Finished size of block (e.g. 15") ÷ 1.414 + .875 = SIZE
Side Setting Triangles (Quarter Square):
... Finished size of block (e.g. 15") x 1.414 + 1.25 = SIZE
When setting quilts on point remember to use the diagonal measurement to determine how many blocks you will need for the quilt. If you are using a 10" block the measurement would be 14 1/8" (10 x 1.414) Example: Four blocks across and five down measures 56 1/2" x 70 5/8" before the borders are added.