Can't wrap my brain around this
 

I have twenty of these big blocks done. Haven't cut the remaining 16, and think I waould like to make a throw with what I have done instead of making 36. How do I lay out, put together. The point set & triangles alow straight diagonal rows.

http://www.modabakeshop.com/2013/03/...omb-quilt.html

Suggestion put them on the floor or large table and copy quilt picture. Sewing up looks like Y seams, but head can't imagine it at present.

Join 2 of the triangles to each block to almost make a large triangle, then lay them out with one block pointing up and the next one down
[ATTACH=CONFIG]507807[/ATTACH]

I understand the pattern & how to execute the rows using the triangles. I can't figure out how to do a layout using only 20 blocks.

you're not going to have much of a quilt, lay them out 5 rows of 4 and see how it looks

The odd rows have one more block than the even rows. So try setting:
Row 1: 3 blocks
Row 2: 2 blocks
Row 3: 3 Blocks
Row 4: 2 blocks
Row 5: 3 blocks
Row 6: 2 blocks
Row 7: 3 Blocks
Row 8: 2 blocks
You might want to either stop at row 7 or make 3 more blocks and do a row 9 to make it symmetrical.
Alternative, make one more block and lay it out like this, or discard 2 blocks use the 4-3 layout and stop at row 5:
Row 1: 4 blocks
Row 2: 3 blocks
Row 3: 4 Blocks
Row 4: 3 blocks
Row 5: 4 blocks
Row 6: 3 blocks

Kathy, they are 14 inch blocks, so yes, they will make a good-sized throw. I think in this layout the two end blocks are cut off in half to square the ends like in the pattern. Ignoring the color layout, here's an idea.[ATTACH=CONFIG]507900[/ATTACH]

make 4 more and do diagonal rows of 1, 3, 5, 7, 5, 3, 1

That's what I would do